The body weight of a healthy 3-month-old colt should be about ? = 76 kg. (a) If you want to set up a statistical test to challenge the claim that ? = 76 kg, what would you use for the null hypothesis

New Orleans' Coca Cola bottling center wants to determine whether the mean amount of product in a 12 oz can of Coke is actually 12 ounces. Thus, the null and alternative hypotheses are       Ho: mu is equal to 12 ounces     Ha: mu is not equal to 12 ouncesYou want to be extra sure that you aren't underfilling (which would open you up to a lawsuit). Being risk averse, you set out to conduct a hypothesis test at a stringent 99% level. Fill rates are distributed Normally. You take a sample of 50 different Coke cans and carefully measure the amount of product. From this sample, you calculate an avg fill of 12.3 ounces, with a standard deviation of 0.75 ounces.  What do you conclude about the average amount of Coke product in the cans? Group of answer choices a. There is sufficient evidence to conclude that you are not filling to 12 ounces on average.   b. There is NOT sufficient evidence to conclude that you are under- or over-filling on average.

A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 258 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased Total Vaccinated 55 62 117 Not Vaccinated 70 71 141 Total 125 133 258 Copy Data Step 1 of 8: State the null and alternative hypothesis.

A century ago, the average height of adult women in the United States was 63 inches. Researchers believe that the average might be greater today. A random sample of 40 adult women was selected from the population. The sample had mean 64.2 inches and standard deviation 2.9 inches. Assuming all conditions for inference are met, the researchers will perform an appropriate hypothesis test to investigate their belief. Which of the following is the correct test statistic for the hypothesis test? A t = 63-64.2 2.9 63-64.2 2.9 t 3= 63-64.2 29 40 64.2-63 t 3= 2.9 64.2-63 t = 2.9 US 1 DELL 么 & %24 %23 || E.

New Orleans' Coca Cola bottling center wants to determine whether the mean amount of product in a 12 oz can of Coke is actually 12 ounces. Thus, the null and alternative hypotheses are       Ho: mu is equal to 12 ounces     Ha: mu is not equal to 12 ouncesYou want to be extra sure that you aren't underfilling (which would open you up to a lawsuit). Being risk averse, you set out to conduct a hypothesis test at a stringent 99% level. Fill rates are distributed Normally. You take a sample of 50 different Coke cans and carefully measure the amount of product. From this sample, you calculate an avg fill of 12.3 ounces, with a standard deviation of 0.75 ounces.  Do you reject or not-reject the null hypothesis? Group of answer choices Do not reject the null hypothesis.  Reject the null hypothesis.

A sales manager believes that the mean number of days per year her company's sales representatives spend traveling is less than 50.   A test is made of ?0 ? = 7 ?????? ?1 ? < 50. The null hypothesis is not rejected.  State an appropriate conclusion.

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A news article that you read stated that 51% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 122 of the 248 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? ✓ Select an answer H₁: ? Select an answer (please enter a decimal) (Please enter a decimal) c. The test statistic ? d. The p-value = e. The p-value is ? ✓ a f. Based on this, we should Select an answer the null hypothesis. (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.)

What are the hypotheses for the​ test?     A. H0​: β1≠0 and Ha​: β1=0   B. H0​: β1=0 and Ha​: β1<0   C. H0​: β1=0 and Ha​: β1>0 Your answer is not correct.   D. H0​: β1=0 and Ha​: β1≠0 This is the correct answer.   What is the test​ statistic?   t= ​(Round to two decimal places as​ needed.)   Find the​ P-value.   ​P-value= ​(Round to three decimal places as​ needed.) Part 4 Which of the following is the correct conclusion for the hypothesis​ test?     A. Do not reject H0​; the data provide sufficient evidence to conclude that x is useful for predicting y.   B. Reject H0​; the data do not provide sufficient evidence to conclude that x is useful for predicting y.   C. Do not reject H0​; the data do not provide sufficient evidence to conclude that x is useful for predicting y. Your answer is correct.   D. Reject H0​; the data provide sufficient evidence to conclude that x is useful for predicting y. Part 5 b. Find a 95​%…

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