A pharmaceutical company thinks that the mean cost is more than $52. You want to support this claim.
H0: μ > $52
H1: μ <= $52
Please let me know if you have any doubts. Thanks!!
Your medical research team is investigatng the mean cost of a 30-day supply of a certain...
1. A baseball team claims that the mean length of its games is 2.8 hours. State H0 and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below. 2. An Internet provider is trying to gain advertising deals and claims that the mean time a customer spends online per day is greater than...
Suppose the mean cost across the country of a 30 day supply of a generic drug is R46.58 with a standard deviation of R4.84. What is the probability that the mean of a sample of 100 prices of 30 day supplies of this drug will be higher than R45?
An Internet provider is trying to gain advertising deals and claims that the mean time a customer spends online per day is greater than 49 minutes. You are asked to test this claim (a) How would you write the null and alternative hypotheses if you represent the Internet provider and want to support the claim? (b) How would you write the null and alternative hypotheses if you represent a competing advertiser and want to reject the claim? (a) Ho: 49...
An Internet provider is trying to gain advertising deals and claims that the mean time a customer spends online per day is greater than 31 minutes. You are asked to test this claim. (a) How would you write the null and alternative hypotheses if you represent the Internet provider and want to support the claim? (b) How would you write the null and alternative hypotheses if you represent a competing advertiser and want to reject the claim? Upper H 0...
33. A company claims that the mean monthly residential electricity consumption in a certain region is more than 860 kiloWatt-hours (kWh). You want to test this claim. You find that a random sample of 61 residential customers has a mean monthly consumption of 880 kWh. Assume the population standard deviation is 125 kWh. At alphaequals0.10, can you support the claim? Complete parts (a) through (e). (a) Identify Upper H 0 and Upper H Subscript a. Choose the correct answer below.
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An Internet provider is trying to gain advertising deals and claims that the mean time thethe competitors' customerscompetitors' customers spendspend online per day is lessless than 28 minutes. You are asked to test this claim. (a) How would you write the null and alternative hypotheses if you represent the Internet provider and want to support the claim? (b) How would you write the null and alternative hypotheses if you represent a competing advertiser and want to reject the...
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The U.S. Department of Agriculture reports that the mean cost of raising a child from birth to age 2 in rural areas is $8390. For a specific rural area, a random sample of 900 children (age 2) has a mean cost of $8275. The p -value for this sample is .108. Does this indicate that the mean cost in this area is less than the national average? Claim: The mean cost of raising a child from birth to age...
ou receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is less than 32 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are listed below. Is there enough evidence to support the university's claim at alphaα = 0.05? 35 28 29 33 32 40 26 25 29 28 30 36 33 29 27 30...