Asked by jguga04

# Hi, I really can't manage to answer these problems. Can you lend me...

Hi, I really can't manage to answer these problems. Can you lend me a hand please? This is for my Statistical Analysis for IE subject. Thank you so much, I would greatly appreciate it.

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A. - Perform each of the following steps. a. State the hypothesis and identify the claim b. Find the critical value(s) C. Find the test value d. Make the decision e. Summarize the results 1. The average aratiles fruit has approximately 200 seeds. A very patient engineering student selected a random sample of 10 aratiles fruit and found a sample mean of 185.2 seeds with a standard deviation of 10. At the 0.05 level of significance, can it be concluded that the mean is less than 200? 2. In 2020, 45.6% of Florida motor vehicle accidents involved no improper driving. In an area comprised of six adjoining cities, it was found that out of 110 randomly selected accidents, 60 involved improper driving in some way. At the 0.10 level of significance, is there sufficient evidence to conclude that the proportion of accidents involving improper driving differs from the 2020 proportion? 3. Test the claim that the standard deviation of the number of aircraft stolen each year in the United States (during the Trump administration) is less than 15 if a random sample of 12 years had a standard deviation of 13.6, use alpha 0.05 value. 4. The average length of 'short hospital stays' for Covid-19 infected men is slightly longer than that for women, 5.2 weeks versus 4.5 weeks. A random sample of recent hospital stays for both men and women revealed the following. At alpha equals 0.01, is there sufficient evidence to conclude that the average hospital stay for men is longer than the average hospital stay for women? Men Women Sample Size 32 30 Sample Mean 5.5 weeks 4.2 weeks Population Std Deviation 1.2 weeks 1.5 weeks

Answered by grifrey4

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