If 7 is mean of 10,3,4,a,6,9,10. Find the value, №18010830, 17.10.2020 19:13

Mathematics

If 7 is mean of 10,3,4,a,6,9,10. Find the value of a

Step-by-step answer

P Answered by Master

a = 7

Step-by-step explanation:

Given:

7 is mean of 10,3,4,a,6,9,10

To Find:

Value of a

Solve:

Mean → $\frac{(4+10+3+6+9+10+a)}{7}=7$

⇒ 42+a=49

Subtract 42 from both sides

x + 42 - 42 = 49 - 42

Simplify

⇒ a=7

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Mathematics

True or False? The first distribution shown below has a smaller mean than does the second distribution. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112 O A. True O B. False

Step-by-step answer

P Answered by Master

18

I'm not really sure because I have not done this in a while but I think True

Step-by-step explanation:

...

Mathematics

True or False? The first distribution shown below has a smaller mean than does the second distribution. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112 O A. True O B. False

Step-by-step answer

P Answered by Specialist

18

I'm not really sure because I have not done this in a while but I think True

Step-by-step explanation:

...

Mathematics

True or false the first distribution shown below has a smaller mean than does the second distribution. 1,2,3,4,5,6,7,8,9,10,11,12. 101,102,103,104,105,106,107,108,109,110,111,112

Step-by-step answer

P Answered by Master

19

The number set 1-12 has a smaller mean than 101-112

Computers and Technology

You do not need to import any libraries or modules about K-means clustering because you will implement it from scratch. The template of the code is provided, and you just need to write your code at specified locations with your code is here . Download the dataset ‘k_means_clustering_data.csv’ and save it into your working directory where we can find your source code about this homework. The dataset has two columns (‘x’ and ‘y’) and 42 records. They are 42 points in a 2D plane. Your goal is to group them into K clusters using K-means clustering

Step-by-step answer

P Answered by Master

2

MAD = Mean Absolute Deviation.
so you need to calculate the mean ( average) and then calculate the MAD ratio

see attached picture for how to calculate the MAD:
First, i would like to know what is means when someone asks you to find the means-to-mad ratio. i do

First, i would like to know what is means when someone asks you to find the means-to-mad ratio. i do

Computers and Technology

You do not need to import any libraries or modules about K-means clustering because you will implement it from scratch. The template of the code is provided, and you just need to write your code at specified locations with your code is here . Download the dataset ‘k_means_clustering_data.csv’ and save it into your working directory where we can find your source code about this homework. The dataset has two columns (‘x’ and ‘y’) and 42 records. They are 42 points in a 2D plane. Your goal is to group them into K clusters using K-means clustering

Step-by-step answer

P Answered by Specialist

2

MAD = Mean Absolute Deviation.
so you need to calculate the mean ( average) and then calculate the MAD ratio

see attached picture for how to calculate the MAD:
First, i would like to know what is means when someone asks you to find the means-to-mad ratio. i do

Mathematics

According to a study published in the New England Journal of Medicine, overweight people on low-carbohydrate and Mediterranean diets lost more weight and got greater cardiovascular benefits than people on a conventional low-fat diet (The Boston Globe, July 17, 2008). A nutritionist wishes to verify these results and follows 30 dieters on the low-carbohydrate and Mediterranean diets and 30 dieters on the low-fat diet. These data (measured in pounds) can be found on the text website, labeled Different Diets. Let Low-carb or Mediterranean and Low-fat

Step-by-step answer

P Answered by PhD

Explained below.

Step-by-step explanation:

A two-sample test is to be performed to determine whether the mean weight loss for those on low-carbohydrate or Mediterranean diets is greater than the mean weight loss for those on a conventional low-fat diet.

(a)

The hypothesis can be defined as follows:

H₀: μ₁ - μ₂ ≤ 0 vs. Hₐ: μ₁ - μ₂ > 0

(b-1)

Use Excel to perform the t test for independent samples.

The output is attached below.

The test statistic value is, t = 7.58.

(b-2)

The degrees of freedom is, df = 58.

The critical value is, t₅₈ = 1.672.

The rejection region is:

Rejected H₀ if t > t₅₈ = 1.672.

(c)

Decision:

t = 7.58 > t₅₈ = 1.672

The null hypothesis will be rejected at 5% level of significance.

Thus, the nutritionist can conclude that overweight people on low-carbohydrate or Mediterranean diets lost more weight than people on a conventional low-fat diet.

The correct option is Yes.

Mathematics

According to a study published in the New England Journal of Medicine, overweight people on low-carbohydrate and Mediterranean diets lost more weight and got greater cardiovascular benefits than people on a conventional low-fat diet (The Boston Globe, July 17, 2008). A nutritionist wishes to verify these results and follows 30 dieters on the low-carbohydrate and Mediterranean diets and 30 dieters on the low-fat diet. These data (measured in pounds) can be found on the text website, labeled Different Diets. Let Low-carb or Mediterranean and Low-fat

Step-by-step answer

P Answered by PhD

Explained below.

Step-by-step explanation:

A two-sample test is to be performed to determine whether the mean weight loss for those on low-carbohydrate or Mediterranean diets is greater than the mean weight loss for those on a conventional low-fat diet.

(a)

The hypothesis can be defined as follows:

H₀: μ₁ - μ₂ ≤ 0 vs. Hₐ: μ₁ - μ₂ > 0

(b-1)

Use Excel to perform the t test for independent samples.

The output is attached below.

The test statistic value is, t = 7.58.

(b-2)

The degrees of freedom is, df = 58.

The critical value is, t₅₈ = 1.672.

The rejection region is:

Rejected H₀ if t > t₅₈ = 1.672.

(c)

Decision:

t = 7.58 > t₅₈ = 1.672

The null hypothesis will be rejected at 5% level of significance.

Thus, the nutritionist can conclude that overweight people on low-carbohydrate or Mediterranean diets lost more weight than people on a conventional low-fat diet.

The correct option is Yes.

Computers and Technology

Write a complete program in Assembly Language: 1. Promts the user to enter 10 numbers. 2. saves those numbers in a 32 bit integer array. 3. Calculates the sum of the numbers and displays it. 4. Calcualtes the mean of the array and displays it. 5. Prints the array with the same order it was enterd. 6. Rotates the members in the array forward one position for 9 times. so the last rotation will display the array in reversed order. Print the array after each rotation. check the sample run. Here is Sample Run: Please enter a number: 2 Please enter a

Step-by-step answer

P Answered by Master

.model small

.stack 100h

.data

prompt db 13, 10, 'First number:','$'

prompt db 13,10, 'Second number:', '$'

result db 13, 10, 'Sum','$'

Explanation:

See attach image

Write a complete program in Assembly Language: 1. Promts the user to enter 10 numbers. 2. saves thos

Mathematics

According to a study published in the New England Journal of Medicine, overweight people on low-carbohydrate and Mediterranean diets lost more weight and got greater cardiovascular benefits than people on a conventional low-fat diet (The Boston Globe, July 17, 2008). A nutritionist wishes to verify these results and follows 30 dieters on the low-carbohydrate and Mediterranean diets and 30 dieters on the low-fat diet. These data (measured in pounds) can be found on the text website, labeled Different Diets. Let Low-carb or Mediterranean and Low-fat

Step-by-step answer

P Answered by Specialist

Step-by-step explanation:

a)

Here researcher claims that the mean weight loss for those on low-carbohydrate or Mediterranean diets is greater than the mean weight loss for those on a conventional low-fat diet

Set the null and alternative hypotheses to test the above claim as below.

$H_0:\mu_1\leq\mu_2\\\\=H_0:\mu_1-\mu_2\leq 0$ versus $H_A:\mu_1 \mu_2\\\\H_A:\mu_1 -\mu_20$

b)

Assume that the variance of the two populations are equal.

Under the null hypothesis, the test statistics is defined as

$t= \frac{\bar x_1 - \bar x_2}{s_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}$

where $s_p=\sqrt{\frac{(n_1-1)s_1^2+(n_2-1)s_2^2}{n_1+n_2-2}}$

Use the foll owing Excel instructions and conduct the above test.

Step1: Enter the datainto two columns of spreadsheet.

Step2: Select Data Analysis from Data ribbon.

Step3: Select t-test. Two-sample Assuming equal variances.

Step4: Input the data range for variable 1 and variable 2.

Step5: Enter 0 as the Hypothesized Mean Difference.

Step6: Click OK.

Thus, the resultant outout is as follows:

Low-carb Low-fat

Mean 9.773333333 6.283333333

Variance 3.197885057 3.160747126

Observations 30 30

Pooled Variance 3.179316092

Hypothesized Mean Difference 0

df 58

t Stat 7.580610844

P(T < = t) one-tail 1.54916E - 10

t Critical one — tail 1.671552762

P(T <2) two-tail 3.09831E - 10

t Critical two - tail 2.001717484

1) From the above output, the test statistics is obtained as t = 7.5806

2) From the above output, the critical value for one-tailed testis obtained as $t_{crit}=1.672$

Rejection rule: Reject H_0 if $t_{crit}1.672$

c)

At 5% level of significance, the calculated value of test statistics is greater than the critical value.

Therefore, reject the null hypothesis.

Hence, the nutritionist conclude that overweight people on low-carbohydrate or Mediterranean diets lost more weight than people on a conventional low-fat diet.

If 7 is mean of 10,3,4,a,6,9,10. Find the value of a

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