PLEASE DO NOT ANSWER !!!!! Tim believes that a coin is coming up tails less than

Question

PLEASE DO NOT ANSWER !!!!!

Tim believes that a coin is coming up tails less than 50% of the time. He tests the claim p < 0.5. In 100 tosses, the coin comes up tails 57 times. What is the value of the sample proportion? Do you think the P-value will be small or large and what should Tim conclude about the claim p < 0.5?

The Bide-a-While efficiency hotel, which caters to business workers who stay for extended periods of time (weeks or months), offers room service. In a small study of 35 randomly selected room service orders, the 95% confidence interval for mean delivery time for room service is 24.8 < < 29.6 minutes. The marketing director is trying to determine if she can advertise, “room service in under 30 minutes, or the order is free.” How would you advise her?

Explanation / Answer

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2) Interval = 24.8 < < 29.6 minutes

Rule:

If the confidence interval does not contain the null hypothesis value (30 minutes), the results are statistically significant. So, null is rejected here.

Which means she can advertise room service in under 30 minutes, or the order is free.

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