The standard deviation of math test scores at one high school is 16.1. A teacher claims that the standard deviation of the sophomores’ test scores is different to 16.1. A random sample of 20 results in scores are given below. Use a significance level of 2% to test the teacher’s claim and use the P-value method. This is the data:

Q: Consider the following 10 exam scores: 28, 57, 58, 64, 69, 74, 79, 80, 83, and 85 Find the…

A: According to the provided information, the exam score is as follows: 28, 57, 58, 64, 69, 74, 79, 80,…

Q: The low temperature in city 5 yesterday was 34 degrees. For this month of the year, the average low…

A:

Q: Based on the textbook and in - class exercise, answer the questions below: For the data set:   (1,…

A: The question is about measures.Given :

Q: Use the following setup to answer the following questions. Draw a diagram where asked. A real estate…

A: For the given data Perform t test for one mean

Q: Assume you are going to test the equality of population means in a paired samples design against a…

A:

Q: Let µi =the true mean score for all students like these receiving the intervention and u2 = the true…

A: Box plot also known as box and whisker diagram is a standardized way of representing the data…

Q: Joan's finishing time for the Bolder Boulder 10K race was 1.78 standard deviations faster than the…

A: From the provided information, Joan’s finishing time for the Bolder Boulder 10k race was 1.78…

Q: Use the sample mean(78.5)and sample standard deviation (12.3671)in your calculations below. Use…

A: Given that:

Q: A college was conducting a phonaton to raise money to increase students’ scholarships. The president…

A: The observations of the amount pledged (in thousands of dollars) are as follows:16, 18, 11, 17, 13,…

Q: 8. Use any method to calculate the sample mean, median, and standard deviation of the following…

A: Note: According to Bartleby guidelines expert solve only one question and rest can be reposted. Data…

Q: The weights, in pounds, of a small group of randomly selected dogs are 34, 37, 42, 57, 64, ar…

A: We have given that,  The data set are :- 34, 37, 42, 57, 64 Then,  We will find the sample standard…

Q: On the past math summative exam the bottom 20% of students failed to pass the test.the mean for the…

A:

Q: Find the variance of the following sample data: 11, 13, 14, 15 and 21 (Write the answer up to 1…

A: Given that  11,13,14,15,21 To find the variance

Q: About 300 secretaries work in a government agency. Their average keyboard usage rate is 65 words per…

A: Basically this question is checking our understanding about descriptive statistic and hypothesis…

Q: These are the heart rates of diabetic patients from a hospital: 81, 104, 116, 120, 111, 81, 116,…

A:

Q: Consider the following distribution of scores: 2,5,3,7,6,5. What is the mean?

A:

Q: Determine the sample standard deviation.

A: Given  29.6 32.4 38.7 42.4 44.5 46.4 49.0 60.8 70.2 Now sample size (n) = 9…

Q: The accompanying data represent the pulse rates (beats per minute) of nine students. Treat the nine…

A: Given, Student Pulse 1 76 2 60 3 60 4 80 5 73 6 80 7 80 8 68 9 73

Q: Five cars of the same year and model were tested for gas mileage in highway driving and the results…

A: The data are X: 30,39,33,31,27

Q: Find standard deviation of each sampling distribution

A: here  given, According to a gallup survey of boys 77% of boys had played computer games in the past…

Q: A group of high school students was asked how many hours per week they thought would be reasonable…

A: We have to calculate mean and standard deviation.  Before that we have to make the data continuous.…

Q: ketch a bell curve for the ACT composite data with markings on the horizontal axis for ±1 standard…

A: here given , For the ACT, the mean composite score was 21.0 with a standard deviation of 5.2.

Q: An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for…

A: Given, Cost of repair is 430,461,416,221

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: xP(x)00.00310.02620.11830.21240.27450.22760.10870.02780.005

Q: The following data set shows the frequencies of the grouped scores for the 2008 Masters Golf…

A: Given data, Classes Midpoint (Mi) Frequencies (fi) Mi*fi​ 280-283 281.5 2 281.5*2=563 284-287…

Q: The number of patients coming into a dental clinic each day were 74, 52, and 83. a. Find the sample…

A: Given: The data of the number of patients coming into a dental clinic each day is given as:…

Q: The mean is μ = girl(s). (Round to one decimal place as needed.) The standard deviation is o =…

A: Number of girls xP(x)00.00310.03220.11430.22740.26650.21460.11270.02980.003

Q: A sandwich shop claims to sell sub sandwiches that are 12 inches lona. An employee is a little…

A: We have given information, μ=12 inches n=45 x¯=12 inches s= 18 inches

Q: Using the following set of data (the same as in the previous problem), find the sample standard…

A: Given data, 8, 7, 11, 10, 10, 8 sample standard deviation=?

Q: A concierge is interested in how long it takes to bring passengers to the airport and then return to…

A: (a) First we calculate the mean; The table of calculations is provided below; No. x (x-x¯)2 1…

Q: Variance, and he data. e?

A: Given : The Highway Patrol, using radar, checked the speeds (in mph) of 30 passing motorists at a…

Q: A sample of 100 adult women was taken, and each was asked how many children she had. The results…

A: As per our guidelines we are suppose to answer only three sub parts. From the given data the no.of…

Q: Find the mean, median, mode, range, variance and standard deviation.

A: Given data : [8,6,3,0,0,5,9,2,1,3,7,10,0,3,6]

Q: The following data set represents performance scores from a sample of participants in a psychology…

A: The formula to find sample standard deviation is as follows,  s = ∑ x2-∑x2nn-1

Q: The data in hours was collected by subtracting 5 from each observation while examining the drying…

A: