A.)For this study, we should use Select an answer t-test for a population mean z-test for a population proportion B.)The null and alternative hypotheses would be: H0:H0: ? p μ Select an answer < = ≠ > H1:H1: ? μ p Select an answer > < ≠ = C.)The test statistic ? z or t = ____ (please show your answer to 3 decimal places.)
question 28. I will submit this problem in three parts because it is long, and i was asked to seperate longer problems so you are not asked to do more than what you are being paid for.
part 1 problem #28
Before the furniture store began its ad campaign, it averaged 146 customers per day. The manager is investigating if the average is larger since the ad came out. The data for the 16 randomly selected days since the ad campaign began is shown below:
172, 147, 168, 163, 166, 139, 158, 151, 137, 140, 138, 137, 158, 133, 144, 144
Assuming that the distribution is normal, what can be concluded at the αα = 0.10 level of significance?
A.)For this study, we should use Select an answer t-test for a population
B.)The null and alternative hypotheses would be:
H0:H0: ? p μ Select an answer < = ≠ >
H1:H1: ? μ p Select an answer > < ≠ =
C.)The test statistic ? z or t = ____ (please show your answer to 3 decimal places.)
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