1. Compute the margin of error E: CL= 99%, s 21, n = 8

Q: a 95% confidence interval estimate for population mean is determined to be 75.38 to 86.52. if the…

A: We have  to find the confidence level is reduced to 90%, the confidence interval will....

Q: An important factor in selling a residential property is the number of people who look through the…

A: Since the sample size is small and population standard deviation is unknown, t distribution can be…

Q: A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many…

A: The formula for the sample size is as follows:

Q: Determine the margin of error for a confidence interval to estimate the population mean with n = 21…

A: n = 21  s​ = 12.6 confidence interval = 80%.

Q: Find the 2-decimal answers for a 96% confidence interval if a samle of 56 students have a mean…

A: From the provided information, Population standard deviation (σ) = 2.35 Sample mean (x̄) = 51 Sample…

Q: GPA of SMSU students is normally distributed with standard deviation o = 0.8. The average GPA of a…

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Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: We have given the lower bound 19 Upper bound is 23

Q: Noise levels in a hospital were measured at 81 different locations. The average level was found to…

A: It is given that, Sample mean = 61.2 decibels. Sample standard deviation, s is 7.9 decibels. The…

Q: interested in the true mean age for Winter Foothill College students. Let X = the age of a Winter…

A: Given : Sample Size , n= 25 Sample Mean , x̄ =30.4 population standard deviation ,…

Q: A researcher is trying to estimate the population mean for a certain set of data. The sample mean is…

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Q: The number of cars sold annually by used car salespeople is normally distributed with a standard…

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Q: 2. A confidence interval for the population mean based on 16 individuals has been reporte to (34.14,…

A:

Q: The pulse rates of 179 randomly selected adult males vary from a low of 43 bpm to a high of 103 bpm.…

A: Given : The pulse rates of 179 randomly selected adult males vary from a low of 43 bpm to a high of…

Q: The confidence interval for a population mean is (7.36, 7.52). What the the sample mean and the…

A: Solution: Given information: The confidence interval for a population mean μ is ( 7.36, 7.52) Upper…

Q: Find the lower limit of 95% confidence interval. An SRS of 36 students were taken from high schools…

A: Given Mean=85 Standard deviations=7.15 n=36

Q: Noah wants to advertise how many chocolate chips are in each Big Chip cookie at his bakery. He…

A:

Q: A researcher collected sample data for 20 women ages 18 to 24. The sample had a mean serum…

A: Given : Sample Size, n = 20 Sample Mean, x̄ = 188 sample standard…

Q: Suppose researchers are about to draw a sample of 1500 observations from a normally distributed…

A: Sample size, n = 1500 tα/2 = 0.46 We have to find the confidence level.

Q: Find a 90% confidence interval for the population mean age of the Smurfs if a sample of 52 smurfs…

A: It is given that, There is a random sample of size 52 and has a mean of 49.7 and the standard…

Q: 3. A sample of 8 adult elephants had an average weight of 12,300 pounds. The standard deviation for…

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Q: A health researcher wants to determine the effectiveness of a new blood pressure medication.  As the…

A: For 37 volunteers

Q: A warehouse owner wants to know the average weight of books at his facility. He weighs 30 books and…

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Q: Determine construct the sample size is 5 and the level confidence is 99.9%. the value of t necessary…

A: Answer :- Determine the value  of  t necessary to  construct a confidence interval when…

Q: A doctor wants to estimate the HDL cholesterol of all 20- to 29-year-old females. How many subjects…

A: For the given data sample size (n ) = ?

Q: A sample of 20 items provides a sample standard deviation of 4. a. Compute the 90% confidence…

A:

Q: approximately normal. Step 1 of 2: Find the critical value that should be used in constructing the…

A: We have given that  Sample mean = 0.890 Sample standard deviation = 0.0312 Sample size = 4

Q: The mean was found to be 25% and the confidence interval was (20.4%,29.6%) therefore the margin of…

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Q: Q1. A survey of 345 men showed that the mean time spent on daily grocery shopping is 15 mins. From…

A: Note: According to Bartleby guidelines expert solve only one question and rest can be reposted

Q: required, round your answers to two decimal places. Provide a 90% confidence interval for the…

A:

Q: The confidence interval for a population mean is (7.32, 7.52). What are the sample mean and the…

A: given data, the confidence interval for a population mean is (7.32,7.52)sample mean and margin of…

Q: Virginia wants to estimate the percentage of students who live more than three miles from the…

A: We have given that Margin of error (E) = 5% = 0.05Significance level (α) = 1 - 0.95 = 0.05 Hence,…