State the null and alternative hypotheses
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Q: body healthy convinced. You believe that it is not 98.6° F. You collected data using 35 healthy…
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Q: It is commonly believed that the mean body temperature of a healthy adult is 98.6° F. You are not…
A: According to guidelines we solve first three subparts when given multiple subparts.
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Q: A manufacturer of banana chips would like to know whether its bag filling machine works correctly at…
A: Solution: From the given information, the manufacturer believed that the machine is under filling…
Q: A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly…
A: μ=448 gramx¯=443 grams=16n=43Level of significance = 0.02
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A: The hypotheses are given below:
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A: Given : sample mean = 53 sample standard deviation = 22 sample size = n = 11 Population mean = 62
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A: Solution: From the given information, confidence level is 0.90, σ=5.50 and E=0.95.
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A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…
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A: Given,sample size(n)=15sample mean(x¯)=73.1standard deviation(s)=15degrees of…
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A: population mean()=37.9sample size(n)=140Mean()=38.2standard deviation()=1.2significance level()=0.01
Q: It is commonly believed that the mean body temperature of a healthy adult is 98.6°F. You are not…
A: Answer Given Population mean = μ =98.6 Sample standard deviation = s =0.94 sample size =n=51…
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A: Given data: An automobile manufacturer claims that its van has a μ=45.5 miles/gallon (MPG) rating.…
A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 435 gram setting. It is believed that the machine is underfilling the bags. A 35 bag sample had a
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- A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 419 gram setting. It is believed that the machine is underfilling the bags. A 99 bag sample had a mean of 417 grams with a standard deviation of 25. A level of significance of 0.025 will be used. Assume the population distribution is approximately normal. State the null and alternative hypotheses. Assume the population distribution is approximately normal. State the null and alternative hypotheses.It is commonly believed that the mean body temperature of a healthy adult is 98.6° F. You are not entirely convinced. You believe that it is not 98.6° F. You collected data using 44 healthy people and found that they had a mean body temperature of 98.19° F with a standard deviation of 1.17° F. Use a 0.05 significance level to test the claim that the mean body temperature of a healthy adult is not 98.6° F. a) Identify the null and alternative hypotheses? Ho:[? v b) What type of hypothesis test should you conduct (left , right , or two-talled)? O left-tailed Oright talled O two tailed c) Identify the appropriate significance level. d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places. e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places. null hvoothosis? esc 000 000 F1 F2 F3 F4 F5 F6 @ # $ % 1 2 3 4 5 6 品Last year the government made a claim that the average income of the American people was 33,950. However, a sample of 50 people taken recently showed an average income of 34,076 with a population standard deviation of 324. Is the government estimate to low? Conduct a test to see if the true mean is more than the reported average. Use an alpha =0.01.
- The heights were measured for nine supermodels. They have a mean of 69.5 inches. and a standard deviation of 1.6 inches. Use the traditional method and a 0.01 significance level to test the claim that supermodels have heights with a mean that is greater than the mean of 63.6 in. for women from the general population.an education support group wants to estimate the mean class size for elementary schools in the southeast. they want to have 99% confidence with error of no more than 2 students. A preliminary study gave a standard deviation of 8.4. how many classrooms should they sample?The manufacturer of a particular brand of tires claims they average at least 50,000 miles before needing to be replaced. From past studies of this tire, it is known that the population standard deviation is 8,000 miles. A survey of tire owners was conducted. From the 23 tires surveyed, the mean lifespan was 40500 miles. Using alpha = 0.05, can we prove that the data is inconsistent with the manufacturers claim? We should use a test. What are the correct hypotheses? H0: Ha: Based on the hypotheses, find the following:Test Statistic=p-value= The correct decision is to . The correct conclusion would be:
- Some college graduates employed full-time work more than 40 hours per week, and some work fewer than 40 hours per week. We suspect that the mean number of hours worked per week by college graduates, u, is different from 40 hours and wish to do a statistical test. We select a random sample of college graduates employed full-time and find that the mean of the sample is 44 hours and that the standard deviation is 4 hours. Based on this information, answer the questions below.The manufacturer of a particular brand of tires claims they average at least 50,000 miles before needing to be replaced. From past studies of this tire, it is known that the population standard deviation is 8,000 miles. A survey of tire owners was conducted. From the 21 tires surveyed, the mean lifespan was 46500 miles. Using alpha = 0.05, can we prove that the data is inconsistent with the manufacturers claim? We should use a test. What are the correct hypotheses? H0: Ha: Based on the hypotheses, find the following: Test Statistic= p-value=An automobile manufacturer claims that its van has a 36.7 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating. After testing 140 vans, they found a mean MPG of 37.0. Assume the standard deviation is known to be 1.4. A level of significance of 0.05 will be used. Find the value of the test statistic. Round your answer to 2 decimal places. Enter the value of the test statistic. Answer How to enter your answer (opens in new window) Keypad Keyboard Shortcuts Tables
- The average American consumes 86 liters of alcohol per year. Does the average college student consume more alcohol per year? A researcher surveyed 11 randomly selected college students and found that they averaged 95.8 liters of alcohol consumed per year with a standard deviation of 20 liters. What can be concluded at the the a = 0.05 level of significance? a. For this study, we should use t-test for a population mean O b. The null and alternative hypotheses would be: Ho: μ = H₁: μ > O 86 O 86 c. The test statistic (t) = d. The p-value = e. The p-value is ? a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... 1.625 (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) O The data suggest the population mean is not significantly more than 86 at a = 0.05, so there is statistically insignificant evidence to conclude that the population mean amount of alcohol consumed by college students is…It is commonly believed that the mean body temperature of a healthy adult is 98.6° F. You are not entirely convinced. You believe that it is not 98.6° F. You collected data using 53 healthy people and found that they had a mean body temperature of 98.33° F with a standard deviation of 0.93 ° F. Use a 0.05 significance level to test the claim that the mean body temperature of a healthy adult is not 98.6° F. a) Identify the null and alternative hypotheses? Họ: ? H1: ? b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? left-tailed right-tailed two-tailed c) Identify the appropriate significance level. d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places. e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places.The average American consumes 97 liters of alcohol per year. Does the average college student consume a different amount of alcohol per year? A researcher surveyed 12 randomly selected college students and found that they averaged 79.1 liters of alcohol consumed per year with a standard deviation of 19 liters. What can be concluded at the the a = 0.05 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 ✓ c. The test statistic ? v = (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) d. The p-value =
