2. A professional racing team is holding tryouts at its test track. The team requires its drivers to have an average lap time of at most 133 seconds at its test track. The team will use a one sample z-test of significance to determine if they should hire a new driver.   An amateur driver completes 10 timed laps of the test track with an average lap time of 140 seconds. If the standard deviation of all lap times at this track is 4.5 seconds, what is the value of the test statistic? Round your answer to two decimal places. Answer value    Please show work!!!

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

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A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

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A:

Q: Calculate the mean, standard deviation, and variance for the following five scores: 9, 4, 7, 1, 4.

A: Considering the scores as population. The population mean is, μ=∑XN=9+4+7+1+45=255=5 Thus, the…

Q: Calculate the mean, standard deviation, and variance for the following five scores: 9,4,7,1,4.

A:

Q: A researcher measures the number of hours college students spend on social media in a day. 10…

A: Given data: 2, 6, 5, 3, 3, 7, 5, 5, 6, 8

Q: 2, 5, 9, 13, 17, 202. Find the standard deviation for the above sample data.

A:

Q: According to the U.S. Bureau of Labor and Statistics, realtors in Michigan make $65,330 on average.…

A: Answer: From the given data, Sample size (n) = 30 Sample mean (x⏜) = $ 70125 Population standard…

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: Suppose you plan to take a survey of Math&146 students asked how many miles they commute from their…

A: Given,Confidence Interval = 95%ME= Margin of Error =1.5σ=Population Standard Deviation=5.3

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A: Given data, 12, 15, 16, 20, 20, 27 Sort the data in ascending order. 12,15,16,20,20,27

Q: Español Ojai is a weather station in the state of California and Duxbury is a weather station in the…

A: Dear student, If you find this solution helpful please upvote ? it.

Q: Of the 500 people who took the civil servant acceptance test in one government agency, the average…

A: We have given that  Mean=67.5 Standard deviation=5.2  Find A) P(55.6<x<61)B) P(x>65)

Q: give the sample standard deviation of this data set: 20, 25, 35, 40

A: Sample Standard deviation:   If the standard deviation is calculated for sample then it is called as…

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: 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

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Q: Seven students on an intramural team weigh 179 ​lb, 177 ​lb, 174 ​lb, 185 ​lb, 167 ​lb, 186 lb and…

A: Given179,177,174,185,167,186,220sample size(n)=7

Q: At MJC's intramural sports program, the time to run one mile is recorded for 200 male students In…

A: Given 200 male student  participated in program Mean = 8.   Std deviation = 1 50 female student…

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: Disability causes 48% of all mortgage foreclosures. Given that 20 mortgage foreclosures are audited…

A: Here's if we consider Binomial distribution then probability of success is 0.48 and number of trial…

Q: The Sum of Squared Errors for a data set of 18 numbers is 64. What is the standard deviation?

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Q: The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances…

A:

Q: Imagine that every elementary school in California is measured on several characteristics and then…

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Q: What is the standard deviation of the following sample data:  40, 24, 45, 15, 25, 21.   Round to 2…

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Q: What is the standard deviation of the following sample data:  37, 29, 33, 38, 37, 43.   Round to 2…

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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.

Q: Of the 200 American film enthusiasts, the average age is: 30 years, while the standard deviation is…

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Q: What is the standard deviation of the following sample data:  40, 49, 23, 47, 40, 17.

A:

Q: Salvatore, as the director of a regional bank, is concerned about the wait times of customers at the…

A: 48 patrons at each branch selected, For each branch means and standard deviation mentioned. We have…

Q: If the mean speed for a major league fast ball is 90 miles per hour and the standard deviation is 5…

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