You may need to use the appropriate appendix table or technology to answer this question. A magazine conducts an annual survey in which readers rate their favorite cruise ship. All ships are rated on a 100-point scale, with higher values indicating better service.A sample of 33 ships that carry fewer than 500 passengers resulted in an average rating of 85.36, and a sample of 44 ships that carry s00 or more passengers provided an average rating of 81.50. Assume that the population standard deviation is 4.55 for ships that carry fewer than 500 passengers and 3.97 for ships that carry 500 or more passengers. (a) what is the point estimate of the aference between the population mean rating for ships that carry fewer than 500 passengers and the population mean rating for ships that carry 500 or more passengers? (Use smaler cruise ships- larger cruise ships) (D) A 95% confidence, what is the margin of error? (Round your answer to two decimal places.) (c) What is a 95% confidence interval estimate of the difference between the population mean ratings for the two sizes of ships? (Use smallercruise ships-larger cruise ships. Round your answers to two decimal places.)

Q: Use the sample mean(78.5)and sample standard deviation (12.3671)in your calculations below. Use…

A: Given that:

Q: A dot plot of the speeds of a sample of 50 cars passing a policeman with a radar gun is shown below.

A: Hello! As you have posted 2 different questions, we are answering the first questions. If case you…

Q: You may need to use the appropriate appendix table or technology to answer this question. A magazine…

A: a) The population mean rating for ships that carry fewer than 500 passengers (smaller cruise ships)…

Q: deviations. Which data set is more consistent?   Data set 1: standard deviation = 6.1…

A: According to the given information in this question We need to identify that which data is…

Q: Use the following picture for reference if needed: 99.7% 95% 68% 0.15% 2.35% 34% 34% 2.35% 0.15%…

A: For the distribution of the weight of cows (in lbs), it is given that, the mean weight, μ=1109 and…

Q: You may need to use the appropriate appendix table or technology to answer this question. A magazine…

A: The question is about confidence interval Given : Total no. of ships that carry fewer than 500…

Q: Calculate the mean, standard deviation, and variance for the following five scores: 9,4,7,1,4.

A:

Q: Use the sample mean(78.5)and sample standard deviation (12.3671)in your calculations below. Use…

A: Given that:

Q: Choose a quantitative variable.  Measure it on two different samples of 10, drawn from two different…

A:

Q: Twenty-nine college students were polled and indicated their total cost of textbooks spent on the…

A: Given The data is as follows: 91, 472, 485, 238, 592, 394, 188, 341, 266, 199, 142, 273, 189, 130,…

Q: A particular fruit's weights are normally distributed, with a mean of 497 grams and a standard…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: In a normally distributed data set with a mean of 24 and a standard deviation of 4.2, what…

A:

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: A particular fruit's weights are normally distributed, with a mean of 788 grams and a standard…

A: Let "X" be the weight of the heaviest fruit in grams. Find z-value (z): Since the total area…

Q: video game c

A: given, sample size(n) = 1500 sample mean (x̄) = 115 sample stadard deviation (s) = 11

Q: A particular fruit's weights are normally distributed, with a mean of 377 grams and a standard…

A: Find z-value: Note: The total area under the normal curve is 1. Area to the left of z under the…

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

A:

Q: You may need to use the appropriate appendix table or technology to answer this question. A magazine…

A: 1. Assume that µ1 is population average rating of ships that carry fewer than 500 passengers and µ2…

Q: A quantitative data set has size 80. At least how many observations lie within two standard…

A: It is given that a quantitative data set size is 80.

Q: Chris tested a sample of 20 Brand A electronic engine control modules, and they lasted 48,560…

A: The sample mean and standard deviation for Brand A electronic engine control modules is;…

Q: As reported in Runner's World magazine, the times of the finishers in the New York Cit km run are…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 453 grams and a standard…

A:

Q: A line for tickets to a broadway show had a mean waiting time of 20 minutes with a statistic…

A: Given: Mean,  μ=20 Standard deviation, σ=5 Sample size, n= 200 Use normal approximation here, the…

Q: ting heart rates of a group of healthy adult men were found to have a mean of 73.4 beats per minute…

A: Given that the resting heart rates of a group of healthy adult men were found to have a mean of 73.4…

Q: A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose…

A: A) option A is the answer. Answer : Since the distribution of time spent eating and drinking each…

Q: Lightbulbs are measured in lumens (light output), watts (energy use), and hours (life). A standard…

A: Given:-            Standard white light bulb mean = 675 hours…

Q: A particular fruit's weights are normally distributed, with a mean of 767 grams and a standard…

A: Given data,μ=767σ=39P(X>x)=0.11x=?

Q: Suppose you organized a​ 10-kilometer race in which the times were normally distributed with a mean…

A: Let X be any selected finishing time. Here, we have to find the percentage of runners took longer…

Q: Find the standard deviation of the following data: 13,18,13,14,13,16,14,21,13

A: Given data is13, 18, 13, 14, 13, 16, 14, 21, 13Sample size(n)=9

Q: A quantitative data set has a size of 50. At least how many observations lie within seven standard…

A: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then, for any positive…

Q: Use a normal distribution table or a statistical calculator to answer this question. A farm…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 277 grams and a standard…

A:

Q: A study reported on essential organic molecules and a Normal model can be used to describe these…

A: As per our guidelines we are suppose to answer three sub parts. Given,mean(μ)=194standard…

Q: z-scores to make the following comparison between students. a. Claudia has a score of 61. Her class…

A: Given: For Claudia Raw score = 61 Population mean μ1=74     Population standard deviation σ1=4…

Q: A quantitative data set has size 50. At least how many observations lie within three standard…

A: The size of the data set is 50.

Q: A particular fruit's weights are normally distributed, with a mean of 786 grams and a standard…

A: Given: Weight of fruits are normally distributed with  μ=786 gramsσ=17 grams

Q: Find the mode, mean, and standard deviation of the following data: 3, 2, 3, 4, 6

A: Given Data: Data Set: 3, 2, 3, 4, 6 There are five numbers in the given data set. So, n=5. There is…

Q: According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the…

A: Given X is normal Distributed with mean µ = 65.0 and standard deviation σ = 3.0 Need to find Z score…

Q: The mean height of women in a country (ages 20 of 55 women in this age group is selected. What is…

A: Given : Mean (µ)=63.9 Standard deviation (σ)=25.2 Sample size (n)=55

Q: Determine the class average if the standard deviation was 8% and Henry’s mark of 85% is equivalent…

A: Given that,  The standard deviation =8%, Marks of Henry's =85%, and z-score =1.30.