You think your car’s fuel efficiency is much lower than it should be. The average fuel efficiency of your car that the car manufacturer claim is 27 mpg. Your car’s fuel efficiency is 22 mpg. A). which test would be conducted, z-test or t-test, and why?

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A: Z - score :  It is also called as standard normal variate . Z score follows normal distribution with…

Q: If GH = 12 and HI = 20, GI = ? H

A: Solution-Given details, if GH=12  and HI=20We will calculate value of GI=?

Q: With a = .05, complete step 4 of the hypothesis testing procedure. What decision should the…

A: A test for making a claim about the population means is the  t-test for two means with unknown…

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A: Given that:   Mean Standard deviation Hand rubbing 31 58 Hand washing 71 93

Q: What is the computed value of the pillai's V. Final answer tk r places.

A: The value of Pillai's V is given by: V=traceHH+E-1 H: The hypothesis sum of squares and cross…

Q: 2 3 V3 ±i 2 2 3 2 오 3 13

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A: The claim is the pulse rates of Sandra Johnson will stay the same with exercise.

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Q: To test a newly formulated protein bar designed to improve running performance, 10 distance runners…

A: From the given information, Consider, the given data is below; Runner New formula Old formula 1…

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A: Concept of General Addition Rule: For any two events A and B the General Addition Rule state that:

Q: also m ?DBA= ?

A: Using alternate angle fact

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A: No of customers = 150 Customers ordering fillet mignon = 0.18*150 = 27 Filet served to customers =…

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Q: pizza. Of the attendees surveyed, 21 said that sausage pizza was their favorite type of pizza. There…

A: Number of people surveyed= 40  Total attendees= 1600= 40×40

Q: Based on the results obtained, does listening to music lower oxygen consumption? Test hypothesis at…

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Q: a. Construct a 95% confidence interval for the population mean force. sus D (Round to the nearest…

A: Answer:- Given sample data…

Q: If UV = x + 13 and RT = x - 37, what is the value of x? V R %23

A:

Q: The Phan family drives 10,000 miles/year. Their car averages 28 mpg. Approximately, how much will…

A: First find out the total average gas used in a year than multiply it with rate of gas.

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Q: The records kept by a large department store indicate that, in the past, weekly sales have averaged…

A: Given data n = 15u = 5775x = 6350s = 850df = n-1 =14α = 0.05

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A: We have to perform test for difference in two proportion.

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A: Differentiate e w.r.t to g

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A: Given,  a varies jointly as b and c When a = 14,  b=23  and c = 16  We have to find the value of a…

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A: It is given that the sample size n is 14.

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Q: If the average of z and 5z is 30, what is the value of a?

A: Given that avarage value of z and 5z is 30.