pizza delivery chain advertises that it will deliver your pizza in 35 minutes from when the order is placed. Being a skeptic, you decide to test and see if the mean delivery time is actually more than 35 minutes. For the simple random sample of 7 customers who record the amount of time it takes for each of their pizzas to be delivered, the mean is 39.4 minutes with a standard deviation of 5.5 minutes. Assume that the population distribution is approximately normal. Perform a hypothesis test using a 0.025 level of significance.   Step 3 of 3 :   Draw a conclusion and interpret the decision.

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A:

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Q: Two friends, Karen and Jodi, work different shifts for the same ambulance service. They wonder if…

A: n1=31,X1¯=5.5,σ1=1.4,σ2=1.1,α=0.01,n2=39

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Q: Two friends, Karen and Jodi, work different shifts for the same ambulance service. They wonder if…

A: Let mean numbers of calls for Karen’s is µ1 and mean numbers of calls for Jodi’s is µ2.

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A: Given: Sample size (n)= 19 Sample mean x¯=130 Sample standard deviation (s) = 20 Hypothesized mean…

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A: It is given that the mean is 25 and the standard deviation is 6.5.

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Q: Two friends, Karen and Jodi, work different shifts for the same ambulance service. They wonder if…

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Q: Two friends, Karen and Jodi, work different shifts for the same ambulance service. They wonder if…

A: From the provided information,

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A:

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A: From the provided information,

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Q: Almost all medical schools require applicants to take the Medical College Admission Test (MCAT).  To…

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A: