Sleep (Example 2) An instructor asks a class of 120 students  how many hours they slept during the previous night. What shape do  you think this distribution will have?

Q: From a random sample of 1000 Americans, it was discovered that 920 of them lived in neighborhoods…

A: The following information has been given: The sample size is n=1000. The favorable cases are x=920.

Q: Find the probability of fewer than half of the questions correct in 14 guesses.

A: here given , A student is making independent random guesses on a test. The probability the student…

Q: To test the similarity of variance of the two populations I and II, a sample of 10 were taken from…

A: Given that: Sample sizes: Sample taken from Population I, n1=10 Sample taken from Population II,…

Q: What is the difference between estimated mean and population mean? Thank you

A: Solution Given the difference between estimated mean and population mean

Q: A manufacturer of chocolate candies uses machines to package candies as they move along a filling…

A: Given that: Population mean, μ=8.17 Sample size, n = 50 Sample mean, x¯=8.155 Sample standard…

Q: Identify the median confidence in education for those who identify as white individuals? 2.22 1.78 4…

A: Given data 2.22 , 1.78 , 4 , 2

Q: A researcher is studying two types of medication that both treat hives. 18 out of the random sample…

A: From the provided information,

Q: 10:20 www-awu.aleks.com/a O SEQUENCES, SERIES, AND PROBABILITY Determining a sample space and…

A:

Q: For this section you will not be using the dataset or the Statistical Package R for your…

A: The given information is,the age of the students sampled from the universityof the Southern…

Q: The graph to the right is the uniform probability density function for a friend who is x minutes…

A: Formula Used: Uniform probability distribution: A random variable is said to be uniform distribution…

Q: if necessary.

A: a) Regression line with respect to x1: So, the line of best fit is: ŷ = 48.36 + 1.89x1   y =…

Q: A news company reported that 6% of adult Americans have a food allergy. Consider selecting 10 adult…

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Q: Fill in the 2-way table (exact numbers, no spaces). A survey of 500 people included 270 Female…

A: From the given information we find the probability.

Q: The pulse rates of 175 randomly selected adult males vary from a low of 36 bpm to a high of 96 bpm.…

A:

Q: In 2002, the median pH level of the rain in a national park was 5.20. A biologist thinks that the…

A: Given  A data table  Median =5.2 No of samples=19 We need to determine the P value. Please find the…

Q: a. b. Find the best point estimate of the population mean. Construct and interpret the 85%…

A: here given ,  sample size  = n= 20  sample mean = $48.60 sample standard deviation  = $3.53  here…

Q: Select one: O a. Converse O b. Contrapositive Oc. Inverse O d. Biconditional

A: It is given that p= Roses are red and  q= Violets are blue  It can be seen that both statements p…

Q: ed to figure out how many people are in the world, and how many are asleep at the moment. I know…

A: Sleep plays an important role for a good health  Sufficient sleep refreshes your mind and it regains…

Q: Park Police Departme f

A: There are four types of level of measurement nominal, ordinal, interval and ratio ordinal level :…

Q: Conduct the hypothesis test and provide the test statistic and the critical value, and state the…

A: Given  Total no of checks = 100. Significance level=0.1 We need to find the test statistic, critical…

Q: 3. Find the critical value corresponding to a 90% confidence interval for a population mean with an…

A: 3) It is given that sample size is 15.

Q: A paper manufacturer has a production process that operates continuously throughout an entire…

A: Solution The paper is expected to have a mean length of8​inches, and the standard deviation of the…

Q: The lengths of adult males' hands are normally distributed with mean 192 mm and standard deviation…

A:

Q: A researcher would like to know the proportion of the households that has a cable subscription. She…

A:

Q: According to the Bureau of Transportation Statistics, on-time performance by airlines is described…

A: Claim : The sample is a good fit to the Bureau of Transportation Statistics.

Q: Answers only. Thank you 1. What is the lowest level of measurement required to determine the…

A:

Q: A study conducted in a small company yielded the results shown in the following table Age Insurance…

A: For the Given data Find E( insurance from 45-65 age group ) is = ?

Q: In N(2, 4) the mean is 4 0 2 1 , the standard deviation is 2 0 4 1 Two standard deviations left of…

A: We have given that  X ~ N (µ, σ )= N(2, 4) Mean(µ) = 2 Standard deviations (σ) = 4

Q: Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She…

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Q: Find the expected value for the random variable below. Find the expected value x P(x) 1 0.10 2 0.44…

A: X P(X) 1 0.10 2 0.44 3 0.36 8 0.10

Q: The percentage of alcohol in the cough syrup was measured in 101 randomly selected samples. The…

A: Here given, n = 101 S = Sample standard deviation  = 0.10 Here calculate confidence interval for…

Q: If a light bulb manufacturing company wants to​ estimate, with 90​% ​confidence, the mean life of…

A: The question is about sample size estimation Given : No. of hours within mean life of bulbs lies ( E…

Q: If, in a sample of n = 20 selected from a normal population, X= 53 and S = 12, what are the critical…

A: Here, n= 20 and α=0.01. As the direction of H1 is "not equal to", this is a two tailed test.

Q: Cant find the solution for the remaining 4 questions

A: We make a frequency distribution of the given data set of class starting 10.5  and ending with 58.5…

Q: It is always good to have as narrow a confidence interval as possible, because a C.I. is an estimate…

A:

Q: The amount of syrup that people put on their pancakes is normally distributed with mean 62 mL and…

A: Formula : Z =(X - μ)/σ

Q: Assuming that the population is normally​ distributed, construct a 95​% confidence interval for the…

A: We have given that For Sample A :- 1,2,4,4,5,5,7,8

Q: A box contains 6 blue balls and 4 red balls. Two balls are drawn from the box, one after the other,…

A: Given info:A box contains 6 blue balls and 4 red balls. Two balls are drawn from the box, one after…

Q: When working on a normal distribution other than the standard normal distribution you need to either…

A: We have given that  X ~ N (µ, σ )= N(10, 2)

Q: Several years ago, the state of California launched an aggressive advertisement campaign against…

A: Given data set is 45,48,55,29,44,43,27,49,46,47,52,53,40,39,49,42,37,41,60

Q: U.S. consumers are increasingly viewing debit cards as a convenient substitute for cash and checks.…

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Q: Find the data value is Z = 2.44, μ= 28,  σ = 2.9 Write the data value rounded to 2 decimal places.

A: It is given that Z score = 2.44 Mean = 28 And SD = 2.9

Q: randomly selected children with Tourette syndrome. Round answers to 3 decimal places where possible.…

A:

Q: The Z-score tells you the number of standard deviations away from the mean (and in what direction) a…

A: Given, mean (μ) = 173 standard deviation (σ) = 19 Z score = 0.56

Q: Example The variable BodyFat gives the percent of weight made up of body fat for 100 men. F- this…

A: Here, n=100, x=18.6, and s=8 As confidence level is 95%, the significance level α=0.05.

Q: a fishing trip Brian is going to choose lures to put in his tackle box. He has 7 lures that are…

A:

Q: The production manager of a large manufacturing company estimates that the mean age of his workers…

A:

Q: Use the data in the following table, which lists drive-thru order accuracy at popular fast food…

A: Given Total number of order is 1130

Q: Situation 9. Suppose that X has a lognormal distribution with parameters 8 = -2 and ² = 9. Determine…

A: A lognormal distribution could be a continuous probability distribution of a stochastic variable…

Q: Find the area under the standard normal curve to the right of z = 1.69.

A: here use excel command  for Area under normal curve , here in each step respective excel commands…