use the confidence interval to give a conclusion of the test (if possible) and also state the significance level you are using.

Q: If n=30, ¯xx¯(x-bar)=43, and s=16, construct a confidence interval at a 98% confidence level. Assume…

A:

Q: Which is the stronger level of significance, 0.01 or 0.001?   a. 0.001 This is the probability of…

A: In statistics, level of significance Is defined as the probability of making type 1 error. Type 1…

Q: If n 140 and p (p-hat) = 0.1, construct a 90% confidence interval. Give your answers to three…

A: Find z-critical value:…

Q: Construct a 95% confidence interval for the proportion of adults from the East who say traffic…

A: n = 400 p = 0.34

Q: If n = 200 and p (p-hat) = 0.15, construct a 99% confidence interval. Give your answers to three…

A: Given: n= 200 At 99.0 % confidence level , z score= 2.576 Need to find confidence interval for…

Q: Let's say you survey a random sample of people. You find that 53% prefer apples over oranges. You…

A: given data  p^ = 0.5390% ci for p is : (0.448,0.612)based on this ci we have to find the given…

Q: In a survey of 2000 American adults age 60 and over, 1320 received a flu shot. Construct a 90%…

A: Given that,X =  1320N = 2000

Q: If n=22, ¯xx¯(x-bar)=45, and s=4, construct a confidence interval at a 90% confidence level. Assume…

A: Ans -   Given the level of confidence interval   90 %                      Then   α = 1 - 0.90 =…

Q: Surveys on customers rating of excellence for the clients in EDSA Sang Hotel and Makati Sang Hotel…

A: n1=80n2=100 x1=32x2=14 p1=3280=0.4 p2=14100=0.14 q1=1-p1=1-0.4=0.6 q2=1-p2=1-0.14=0.86

Q: If n = 560 and X = 448, construct a 95% confidence interval for the population proportion, p. %3D…

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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: 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: A confidence interval for a sample is given, followed by several hypotheses to test using that…

A: Given that  For 95% confidence interval  0.43<p<0.78  We have to find the conclusion and…

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

A:

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

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Q: In order to construct a 99% Confidence Interval, we use the following formula: p hat ± ME for 99%…

A: From the provided information, Sample proportion (p̂) = 0.38 Confidence level = 99% Margin of error…

Q: If n-19, ž(x-bar)-43, and s-8, construct a confidence interval at a 90% confidence level. Assume the…

A: Given: n = 19, x¯ = 43, s = 8 Confidence level = 90%

Q: n = 10, mean = 10 , s = 2 a. Can you calculate a 95% confidence interval for this data? b. Can you…

A: a) Since the population standard deviation is not known so we assume that the sample is…

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: a. What does the confidence interval suggest about equality of the mean hemoglobin level in women…

A: It is given that the 95% confidence interval for the difference between the two population means…

Q: Scientists tested each in a sample of 6 alleles of antigen-produced protein for level of peptide.…

A: The sample size n=6 The sample mean x¯=1.54 The sample standard deviation s=0.13 The confidence…

Q: How important is it for a waiter or waitress to complement the customers' dinner selection. A waiter…

A: For customers that were not complemented The average tip was 16% so the proportion is p1⏞=0.16 The…

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: If α = 0.05, then what is the confidence level?

A: Given: α = 0.05   we know that, Confidence level+ α = 1

Q: If n = 28, = 38, and s 17, construct a confidence interval at a 99% confidence level. Assume the…

A: Given information- Sample size, n = 28 Significance level, α = 0.01 Sample mean, x-bar = 38 Sample…

Q: Last year your professor taught economics courses to N = 200 students. From this group you randomly…

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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: You are watching a nightly news broadcast on CNN and the reporter says that a 90% confidence…

A: We have to determine which statement is correct for given situation.

Q: If n=15, ¯xx¯(x-bar)=40, and s=9, construct a confidence interval at a 98% confidence level. Assume…

A:

Q: If n=15, ¯xx¯(x-bar)=33, and s=19, construct a confidence interval at a 80% confidence level. Assume…

A: Given' :  sample mean xbar=33  sample size n=15  sample standard deviations s=14  then to find 80%…

Q: в, — 42, s — 8.8, SS,, — 64, п — 19 90% : < B1< 99% : < B1 S

A: Given   beta cap1 =42, s=8.8, SS xx =64 , n = 19

Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…

A:

Q: You are watching a nightly news broadcast on CNN and the reporter says that a 99% confidence…

A:

Q: I was wondering how to find the confidence interval for this data. And how can I get this answer…

A: X Y (x-xbar)^2 (y-ybar)^2 17 24 43.34028 53.77778 26 7 5.840278 93.44444 31 15 55.00694…

Q: If n = 440 and p = 0.52, construct a 90% confidence interval. %3D Give your answers to three…

A: Given information- Sample size, n = 440 Confidence level, c = 0.90 So, significance level (α) = 0.1…

Q: Let's say you survey a random sample of people. You find that 53% prefer apples over oranges. You…

A: You find that 53% prefer apples over oranges from survey.  ∴ p^ = 0.53 90% ci for p = (0.448,0.612)…

Q: ppose a data set of 4,000 observations (n-4,000) was analyzed using OLS to examine the factors…

A: In the question we are given the Regression equation for College gpa while independent variables in…

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

A:

Q: If n=13, ¯xx¯(x-bar)=37, and s=9, construct a confidence interval at a 80% confidence level. Assume…

A: Givenn =13x = 37s=9confidence interval =80%

Q: A sample of freshman takes a reading comprehension test and their scores are summarized below.…

A:

Q: Let's say you survey a random sample of people. You find that 53% prefer apples over oranges. You…

A: p^ = 0.5390% ci for p is : (0.448,0.612)based on this ci we have to find the given statement is true…

Q: Here are summary statistics for randomly selected weights of newborn girls, n= 244, x= 29.7 hg, s=76…

A:

Q: An inspector inspects large truckloads of potatoes to determine the proportion with blemishes prior…

A: Given, The total sample size, n = 90 No. of blemishes, x = 12 Therefore p^=xn = 1290 = 0.133 Also,…