their lengths as aduits. A 95% confidence interval for the average length of milk-drinking adult mice in centimetres is reported as (9.1,9.7). Which of the following statements is correct? O There is a 95% chance that the true average length of milk-drinking adult mice is between 9.1cm and 9.7cm None of these options are correct O If the experiment was repeated many times, 95% of the confidence intervals would cover the true average length of milk-drinking adult mice. O 95% of the milk-drinking adult mice were between 9.1cm and 9.7cm

Q: If n = 20, a = 48, and s = 8, construct a confidence interval %3D at a 80% confidence level. Assume…

A:

Q: If n=18, (x-bar)=42, and s=17, construct a confidence interval at a 80% confidence level. Assune the…

A: We have given that,  Sample mean (x̄) = 42, standard deviation (s) = 17 and sample size (n) = 18…

Q: If n = 15, 43, and s = 9, construct a confidence interval at a 98 % confidence level. Assume the…

A:

Q: if n=45, bar - x= 38 and S = 16, construct a confidence interval at a 95% confidence level. Assume…

A: Answer: From the given data, Sample size(n) = 45 Mean (X¯) = 38 Standard deviation (s) = 16 95%…

Q: A 95% confidence interval for p is given as (0.28,0.52). How large was the sample used to construct…

A: The lower confidence limit, L=0.28 The upper confidence limit, U=0.52 The confidence interval is…

Q: If n=28, (x-bar)=50, and s=10, construct a confidence interval at a 99% confidence level. Assume the…

A: Sample size n=28Sample mean=50Standard deviation =10

Q: A 95% confidence interval for a population mean was reported to be 148.69 to 155.31. If σ = 15, what…

A: given data 95% ci for mean : (148.69,155.31)σ = 15n = ?

Q: A data set includes data from student evaluations of courses. The summary statistics are n= 84, x =…

A: Given : n = 84 x¯ = 3.85 s = 0.53 α = 0.05 df = n - 1 = 84 - 1 = 83 Hypothesis : H0 : μ = 4.00 Ha :…

Q: If n=14, (x-bar)=37, and s=7, construct a confidence interval at a 98% confidence level. Assume the…

A: Given,n=14x¯=37s=7degrees of freedom(df)=n-1df=14-1=13α=1-0.98=0.02α2=0.01t0.01(13)=2.650     (from…

Q: If n = 28, ¯xx¯ = 49, and s = 19, construct a confidence interval at a 90% confidence level. Assume…

A: Given information- Sample size, n = 28 Sample mean, x-bar = 49 Sample standard deviation, s = 19…

Q: Suppose that the a college wants to have an idea of the average SAT score of the incoming freshman…

A: The confidence level is 0.90, the standard deviation is 310 and margin of error E is 50.

Q: If n=380 and X = 304, construct a 90% confidence interval. Give your answers to three decimals…

A: Given,n=380 ,x=304p^=xnp^=304380=0.81-p^=1-0.8=0.2α=1-0.90=0.1α2=0.05Z0.05=1.645     (from Z-table)

Q: If n = 26,  x¯ = 40, and s = 10, construct a confidence interval at a 95% confidence level. Assume…

A:

Q: What is the value of the point estimate for our 90% confidence interval? Round your answer to three…

A:

Q: If n = 29, a = 30, and s = confidence level. Assume the data came from a normally distributed…

A: Sample size, n = 29 Sample mean = 30 Sample standard deviation = 16

Q: If n = 16, 7 = 43, and s = 17, construct a confidence interval at a 98% confidence level. Assume the…

A:

Q: If n=19, ¯xx¯(x-bar)=37, and s=13, construct a confidence interval at a 99% confidence level. Assume…

A:

Q: If n-28, 2(x-bar)-38, and s-13, construct a confidence interval at a 98% confidence level. Assume…

A: Given : Sample Size, n = 28 Sample Mean, x̄ = 38 sample standard…

Q: If n=41n=41, ¯xx¯=36, and s=9s=9, find the margin of error for a 80% confidence level.

A: Answer - Given, Sample size n = 41,    x  = 36    and s = 9               80% confidence interval…

Q: A sample of 23 plants was taken and the mean height was 27 cm. A 95% confidence interval for the…

A: From the given information, The 95% confidence interval for the true mean height of plants of that…

Q: Identify the t-score for a 90% confidence interval if the sample size is 25. t = The answer isnt…

A: We have given that Confidence level (c) = 90% = 0.90 Significance level (α) = 1 - c = 1 - 0.90 =…

Q: If n=24, ¯xx¯(x-bar)=49, and s=9, construct a confidence interval at a 80% confidence level. Assume…

A:

Q: If X 121, o =27, and n 38, construct a 95% confidence interval estimate of the population mean, u.…

A:

Q: A sample of size 84 was taken from a very large population. Sample statistics, x¯ and s, were used…

A:

Q: A sample of 50 students was taken from the local university. These students spent an average of R170…

A: Given information- Sample size (n) = 50 Mean x̅ = R170 Standard deviation (s) = R25.50 Significance…

Q: A 95% confidence interval forp is given as (0.34,0.66). How large was the sample used to construct…

A: Formula for the sample size needed to estimate a population proportion is

Q: If n = 17, ¯xx¯ = 33, and s = 6, construct a confidence interval at a 99% confidence level. Assume…

A: We have, If n = 17, x¯ = 33, and s = 6, alpha=1-0.99= 0.01 Therefore  Degrees of freedom= n-1=16…

Q: Which one of these is the best interpretation of the 80% confidence level for the mean sugar col of…

A: It is given that the confidence interval is 17.9mm and 27.1 mm.

Q: If n=13, ¯x(x-bar)=44, and s=3, construct a confidence interval at a 99% confidence level. Assume…

A: Here, n is 13, x-bar is 44, and s is 3. Critical value: Using Excel formula…

Q: If n=19, ¯xx¯=40, and s=7, construct a confidence interval at a 99% confidence level. Assume the…

A:

Q: If n = 41, ã=30, and s = 6, construct a confidence interval at a 80% confidence level.

A: It is given that Sample size n = 41 Sample mean = 30 Sample SD s = 6 The critical value of t at df =…

Q: Which type of confidence interval should you use in this situation? A sample of 400 racing cars…

A: Given Information:Sample size (n) = 400 racing carsNumber of cars costing over $700,000 =…

Q: Question Z A random sample of 170 people were asked if they traveled more than 2000miles on their…

A: a) i. Sample is random II) No. of successes (respondents) is it and number of failures is (170 - 17)…

Q: If n=28, (x-bar)=45, and s-8, construct a confidence interval at a 99% confidence level. Assume the…

A: Given that.  Sample size n =28 Sample mean=45 Standard deviation =8

Q: Which of the following would result in the narrower confidence interval?

A: Note: The confidence interval with small confidence level has the narrower confidence interval. The…

Q: QUESTION 2 In which of the following situations we can not construct a confidence interval for the…

A: The condition for constructing the confidence interval for population proportion P using Normal…

Q: If n=19, x= 47, and s = 8, find the margin of error at a 99% confidence level Give your answer to…

A:

Q: If n=41, ¯x=39, and s=16, construct a confidence interval at a 99% confidence level. Assume the data…

A: Given that  Sample size (n) = 41 Sample mean (x¯) = 39 Sample standard deviation (s) = 16 Confidence…

Q: If n = 18, = 44, and s= 3, construct a confidence interval at a 98% confidence level. Assume the…

A:

Q: If n=260 and X = 208, construct a 95% confidence interval. Give your answers to three decimals __…

A: Solution: From the given information, X=208, n=260 and the confidence level is 0.95. The sample…

Q: If n=28, ¯x(x-bar)=32, and s=11, construct a confidence interval at a 95% confidence level. Assume…

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Q: The 85.7% confidence interval estimate for p was (0.14, 0.16). Find ?′ and ME

A:

Q: If n=30, (x-bar)=45, and s=13, construct a confidence interval at a 95% confidence level. Assume the…

A: We have given that,  Sample mean (x̄) = 45, sample size (n) = 30 and standard deviation (s) = 13…