The average amount of time boys and girls ages 7 through 11 spend playing sports each day is believed to be the same. An experiment is done, data is collected, resulting in the data below:  Sample Size Average Number of Hours Playing Sports Per Day  Of 32 girls, the average number hours playing sports is 2 with a standard deviation of 0.75. Of 35 boys, the average number hours playing sports is 3.2 with a standard deviation of 1. Is there a difference in the average amount of time boys and girls ages 7 through 11 play sports each day? Test at the 5% level of significance. (You DO NOT need to show all steps- just state test statistic, p-value versus alpha, formal conclusion and practical conclusion in a complete sentence)

Q: Consider a sample with a mean of 500 and a standard deviation of 100. What are the z-scores for the…

A: The mean is 500 and the standard deviation is 100.

Q: What is the standard deviation of the following sample data: 21, 36, 50, 38, 44, 18. Round to 2…

A: From the provided information, The data values are as follow: 21, 36, 50, 38, 44, 18

Q: he length of 10 bolts are: 17.2,17.9,17.9,18.0,18.0,18.0,18.1,18.1,18.2,18.6 The mean is 18. Find…

A:

Q: What is the standard deviation of the following sample data:  41, 39, 32, 34, 19, 25.

A: Given Data: Let us consider the given sample data: 41, 39, 32, 34, 19, 25.   To Find: The standard…

Q: The standard deviation of the sample  1,1,1,2,3,3,3 is

A:

Q: The drive distance (in yards) for professional golfers is normally distributed with a mean of 282.63…

A: The normal distribution: A continuous random variable X is said to follow normal distribution with…

Q: What is the standard deviation of the following sample data: 41, 35, 20, 47, 43, 35. Round to…

A: Answer - Find  Standard deviation (S) from the following data41,35,20,47,43,35 x x2 41 1681…

Q: The drive distance (in yards) for professional golfers is normally distributed with a mean of 308.04…

A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…

Q: What is the standard deviation of 32, 21, 17, 38 and 6.

A:

Q: What is the standard deviation of the following sample data:  21, 10, 37, 38, 11, 22.   Round to 2…

A: We have given that,  The data set is,  21, 10, 37, 38, 11, 22 Then,  We  will find the standard…

Q: A company of coffee prices at 4 randomly seleced grocery stores in Sampaloc, Manila showed increases…

A: Given data is12,15,17,20sample size(n)=4sample mean(x¯)=12+15+17+204sample mean(x¯)=644sample…

Q: What is the standard deviation of a dataset with the following values: 10, 12, 15, 18, 20?

A: Standard deviation is a measure of the amount of variation or dispersion of a set of values. A low…

Q: What is the standard deviation of the following sample data:  35, 49, 15, 33, 26, 27.

A: Given data,    35, 49, 15, 33, 26, 27.    The objective is to find the standard deviation of the…

Q: What is the standard deviation of the following sample data:  34, 31, 33, 17, 46, 48.

A: Given data is 34, 31, 33, 17, 46, 48.We have to find the standard deviation.

Q: If the heights of intramural college basketball players are normally distributed with mean u =…

A: Given,μ=70σ=6.5P(63.5<X<76.5)=?

Q: Researchers are trying to determine if there is a difference in the average lifespan of two species…

A: Given datafor ceratitis capitatan1=105μ1=51σ1=7for Drosophila melanogastern2=95μ2=48σ2=6

Q: The height of men is a normally distributed variable with a mean of 68 inches and a standard…

A: Mean(μ)=68Standard deviation(σ)=3

Q: what is the mean and standard deviation of the following sample:  8, 1, 5, 1, 5

A: From the given information, X= {8, 1, 5, 1, 5}Mean and standard deviation of the sample can be…

Q: What is the standard deviation of the following sample data: 27, 46, 45, 38, 23, 40. Round to 2…

A:

Q: Based on the sampling of testscores for saveral students at Hilton Junior High School, the following…

A: To calculate the standard deviation of the sample through Excel, follow the below mentioned steps.…

Q: A random sample of 12 second-year university students enrolled in a business statistics course was…

A: Solution: Given information: n= 12 Sample size  μ= 60 Population mean σ= 8 Population standard…

Q: 11. What is the standard deviation of the following sample data:  44, 40, 46, 20, 27, 39.   Round to…

A: It is given that the sample data of 44, 40, 46, 20, 27, 39. Mean: The mean of the sample data is:

Q: Suppose that another sample of resting heart rates for five Math students was obtained: 72, 68, 66,…

A: From the given data we want to know the data value .

Q: Rashid is 84 inches tall. If the height of males in the United States is nor- mally distributed with…

A: Height of Rashid = x = 84 inches. Mean =  70 Standard deviation = 4 The z-score is given by z-score…

Q: The incubation time for Rhode Island Red chicks is normally distributed with mean of 22 days and…

A: From the provided information, Mean (µ) = 22 Standard deviation (σ) = 3 Sample size (n) = 1000

Q: A sample of twelve dogs are in a dog park. They weigh (in pounds) 10, 55, 62, 34, 28, 50, 71, 65,…

A:

Q: What is the sample variance and standard deviation for the data set 9,10,11,33,4 ? Show all work.

A: Given data(x) : 9,10,11,33,4 n = 5 x x2 9 81 10 100 11 121 33 1089 4 16 ∑x=67…

Q: Consider a sample with data values of 26,24,21,17,30,33,28 and 24 . Compute the variance, and…

A: A set of data values is given.The data values are 26, 24, 21, 17, 30, 33, 28 and 24.

Q: Students should spend average of 12 hours studying.  Survey done on 25 students and the distribution…

A: The provided information are:

Q: The commute tỉme for Cypress College students who drive from their home to the college follows a…

A: Here, µ = 26 and σ = 8.

Q: A random sample of 10 baseball players is taken to determine the characteristics of player's…

A:

Q: vg canadian worker spends 29.88 minutes driving to work each day. Assume the distribution of driving…

A: Given Information: On average Canadian worker spends 29.88 minutes driving to work each day. i.e.,…

Q: what is the mean and standard deviation of the following sample:  18, 1, 5, 1, 5

A: Solution:The mean is obtained below:The sample mean is 6.

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.