Homework Answers
Solution :
Given that ,
n = 15
df = 15 - 1 = 14
t 0.05,14 = 1.761
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A random sample of 47 cows was selected to investigate the claim that the mean weekly milk yield for cows is greater than 120 kilograms. The sample mean weekly milk yield is 128.7 and the sample standard deviation is 24.9. Let u be the population mean weekly milk yield for cows. (give answer to two places past decimal) 1. Construct a 90% lower confidence bound for u. Lower Bound: Submit Answer Tries 0/99 2. Perform a hypothesis test to see...
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HELP A random sample of 10 college students was drawn fr om a large university. Their...
HELP
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A simple random sample of size n=15 is drawn from a population that is normally distributed. The sample mean is found to be x bar=68 and the sample standard deviation is found to be s=15. Construct a 90% confidence interval about the population mean.
Question Help For a study of adolescents discosure of their dating and romantic relationships, a sample...
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A random sample of 47 cows was selected to investigate the claim that the mean weekly milk yield for cows is greater than 120 kilograms. The sample mean weekly milk yield is 128.7 and the sample standard deviation is 24.9. Let u be the population mean weekly milk yield for cows. (give answer to two places past decimal) 1. Construct a 90% lower confidence bound for u. Lower Bound: Submit Answer Tries 0/99 2. Perform a hypothesis test to see...
Suppose a random sample of 100 observations from a binomial population gives a value of p = 0.45 and you wish to test the null hypothesis that the population parameter p is equal to 0.40 against the alternative hypothesis that p is greater than 0.40. Complete parts a through c. a. Noting that p = 0.45, what does your intuition tell you? Does the value of p appear to contradict the null hypothesis? O A. Yes, because p satisfies Hg:p>0.40...
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Fill in the blanks to correctly complete the sentence below. Suppose a simple random sample of size n is drawn from a large population with mean u and standard deviation o. The sampling distribution of x has mean u;= __ deviation = and standard Suppose a simple random sample of size n is drawn from a large population with mean u and standard deviation o. The sampling distribution of x has mean u; = | Vand standard deviation or
HELP
A random sample of 10 college students was drawn fr om a large university. Their ages are 22, 17,27, 20, 23, 19,24, 18, 19, and 24 years, with a sample of 3.2. Suppose that you want to test whether the population mean age differs from 20 What is the rejection region for a hypothesis test at a 1% significance level? O right and left tail rejection regions beyond a t critical value of 2.821 in the left tail and...
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