Question 8: calculate in 95% confidence interval for the blood pressure range of any individual who is prescribed the medicine.

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Given  Margin of error=8, level of significance ɑ=0.05, standard deviations σ=10

Q: We have presented a confidence interval (CI) for the difference, μ1 − μ2, between two population…

A: The 90% confidence interval is from –10 to –5. The 90% confidence interval for the mean of the…

Q: Find the critical value for the population mean if there are 756 cats in a sample and you want a 91%…

A:

Q: Your statistics instructor wants you to determine a confidence interval estimate for the mean test…

A: Given that x¯ =160,σ = 45 ,α=0.05

Q: FIND A 90% CONFIDENCE INTERVAL FOR THE DIFFERENCE IN POPULUTION PROPORTIONS Pf -Pm  round your…

A: Given:  n1=100, n2=50, p1^=0.24, p2^=0.43 We find the 90% C.I. for the difference in population…

Q: Describe the Interpretation of Confidence Intervals for μ1 – μ2.

A: The formula for Confidence interval for mean difference is given by,

Q: According to a study, a cup of coffee contains an average of 118 milligrams (mg) of caffeine, with…

A: Answer: Using the given data, Margin of error (E) = 5 mg Range of the amount per cup is 55 to 189…

Q: How large a sample should be selected to provide a 90% confidence interval with a margin of error of…

A:

Q: If the Za/2= 1.56, find the percent (nearest whole number,  for the confidence interval

A: Here, Za/2=1.56. Procedure for finding the percent value corresponding to 1.56 from standard normal…

Q: We are interested in estimating the average amount spent per customer for lunch in a restaurant in…

A: Confidence interval: It is defined as the range which contains the value of a true population…

Q: concentration (µg/mL) of a specific dose of ampicillin in the urine after various periods of time.…

A: In question, Given that we want to estimate the concentration (µg/mL) of a specific dose of…

Q: You are a researcher for the National Highway Traffic Safety Administ estimate the average blood…

A: Given that,The sample size is The sample mean BAC (Blood Alcohol Concentration) is The known…

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: The number of television sets coming off a production line each day is known to have a standard…

A:

Q: 90% confidence

A: Given that  90% Confidence interval for mean = ( 75.3 to 80.9 ) Null hypothesis (Ho) : μ=70…

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Given : Margin of error = 5 α = 0.05 Population standard deviation = σ = 30 zα2 = z0.052 = 1.96

Q: Find the critical value zc that corresponds to a 98% confidence level

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Q: Find the critical value Z a/2 for the 92% confidence interval.

A: We have given information, The confidence level is C=0.92. Here we have to obtain critical value of…

Q: (ii) Let (a, b) be the 95 confidence interval for the population mean u. Find the values of a and b.

A: Givenstandard deviation(σ)=1sample size(n)=16Mean(x)=7.3

Q: If you bet $ 1 on number 13 at roulette (or on any other number) then you win $ 35 if that number…

A: a). The pmf of Poisson distribution is : , where, λ=mean=np Given: n=70, p=138 The calculations for…

Q: Find the critical value, t c,  used for a 95% confidence interval for the mean with a sample size of…

A:

Q: How much more sensitive to contrast are athletes with eye grease than without eye grease? Give a 95%…

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Q: In a random sample of 500 Americans, 50% indicated that they have a cat for a pet. Estimate with 95%…

A: Given information

Q: mong 1815 randomly selected high school students surveyed by the Centers for Diseases Control, 300…

A: Given : Total number of high school students = 1815 Number of students said they were current…

Q: A group of students go to a lake that you fished in, and caught 28 adult striped bass fish. The mean…

A: Obtain the 95% confidence interval for the population mean of adult striped bass for that lake. The…

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

A: Given s=11.2 E=2

Q: the sample proportion of females is  x=118  n=164 P = .720  #1 Make a 95% confidence interval for…

A:

Q: Find the critical value that corresponds to 95% confidence for a mean and n = 35.

A: Given that - Find the critical value that corresponds to 95% confidence for a mean and n = 35.

Q: f all participants in a repeated measures research study show roughly the same difference between…

A: Hypothesis test is conducted to check the difference. To check mean differences we use either Z or T…

Q: We are interested in estimating the average amount spent per customer for lunch in a restaurant at…

A:

Q: ssume that stress level scores are normally distributed with a population mean of 25 and a…

A: Given data, Mean=25 sd =2.5 If n=9 P(23<X<26)=?

Q: what is the 90% confidence interval of the standard deviation where n= 20 and s=40.5

A:

Q: If n = 220 and X = 176, construct a 95% confidence interval for the population proportion, p. Give…

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Q: Find the critical value zc that corresponds to an 80% confidence level.

A: Given : α=1-0.80=0.20We want to find,Critical value,Zc=?

Q: You have a random sample of 30 mice, the mean of the number of pounds that they were eating was 5…

A: A confidence interval is a type of estimate computed from the statistics of the observed data. This…

Q: In a clinical test with 500 subjects, 2500 showed improvement from the treatment. find the margin of…

A: we have given that  sample size=N=2500 . , favorable cases =X=500 sample proportion…