If the p-value=0.03, check all that apply: the result is statistically significant at the 4% level. the result is statistically significant at the 1% level. then the null hypothesis is rejected at the 5% level. then the null hypothesis is rejected at the 2% level.
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- A hypothesis test was performed to decide whether the mean number of words spoken per day by men is fewer than for women. αα = 0.05 and p = 0.02. If a man and a woman are randomly selected there is a 2% chance that the man will speak fewer words than the woman on that day.An auto shop wants to examine the proportion of customers that have to return after an appointment. Last year, an examination of 381 customers found that 33.0% had to return after an appointment. You instituted some changes at the auto shop this year, and found from a sample of 258 customers that 36.2% had to return after an appointment. You want to conduct a hypothesis test to determine if there has been an increase in the proportion of customers that need to return after an appointment since the past year, with a = 0. 10. Using this information, what is the p in your analysis? Round your final answer to two decimal places. Note: 1- Enter your final answer with 2 decimal places.A states Division of Motor Vehicles (DMV) claims that 60% of teens pass their driving test on the first attempt. An investigative reporter examines a simple random sample of the DMV records for 125 teens; 86 of them passed the test on their first try. Test the DMV’s claim, using α = 0.05.1. Set up the hypotheses.2. Calculate the test statistic.3. Determine the critcal value and draw the rejection region.4. State and justify your decision using the rejection region method.5. State your conclusion in terms of the problem.6. Discuss the validity of your results by checking and addressing all assumption
- A grocery store says their mangoes are fresher than most. A typical grocery store has roughly 10% go bad before they sell. A random sample of 135 mangoes from the store showed that 13 of the mangoes were rotten. Assume we have a significance level of 0.05. 1. null hypothesis____________ the alternative hypothesis is__________ 2. Our z-test statistic is 3. Our p-value is 4. evidence supporting the alternative?Suppose a hypothesis test was performed with a level of significance of 0.05. Then if the null hypothesis is actually true, then there is a 5% chance that the researcher will end up rejecting the null hypothesis in error. True Falsetest statistic, and (c) the P-value. Assume the samples were obtained independently from a large population using simple random sampling. Test whether p₁>P2. The sample data are x₁ = 116, n₁ =249, x₂ = 138, and n₂ = 306. (a) Choose the correct null and alternative hypotheses below. OA. Ho: P₁ P₂ versus H₁: P₁ P2 B. Ho: P₁ = 0 versus H₁: P₁ #0 W OC. Ho: P₁ = P₂ versus H₁: P₁ P₂ OD. Ho: P₁ P2 versus H₁: P₁ P₂ w an example Get more help Clear all 17 e Check answer 6:51 PM 3/2/2024 C G
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