A researcher wants to know if high school students spend a different amount of time watching netflix than people in general? On average, 20 high school students reported that they watch netflix for 68 mins. On average, people in general watch netflix for 71 mins, with a standard deviation of 5 mins. Q

Q: Public health statistics indicate that 26% of  American adults smoke cigarettes. A random sample of…

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Q: Mark, who is on the UNH football team, weighs 236 pounds. The entire football team has a mean weight…

A: Calculate the z-score corresponding to the Mark

Q: A researcher claims that college students sleep less than they are recommended. He/she asked 16…

A: Given: n=17x¯=6.83s=2μ=8   The level of significance is taken as 0.05.

Q: A video game company sells an average of 132 games a month per store, with a standard deviation of 9…

A: Given,mean(μ)=132standard deviation(σ)=9sample size(n)=36

Q: Do the students ever make up information for an assignment? You be the judge. Students in an applied…

A: The mean and standard deviation is μ=65σ=7 Now, for case X=42, The required probability can be…

Q: 00 freshmen at Arundel University took part in a math comprehension test. The scores were normally…

A: The middle (center) of the normal curve represents the mean of the curve. The normal curve is the…

Q: In a study in New York, single college men were studied to see if hair color made a difference in…

A: Given, n1=100                       n2=100X1=7.5                        X2=6.4s1=3.6…

Q: John scored 60 in a quiz in Math for which the average score of the class was 50 with a standard…

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Q: Seven students on an intramural team weigh 179 lb, 172 lb, 174 lb, 185 lb, 162 Ib, 181 Ib and 193…

A: According to the provided information, the sample weights are 179, 172, 174, 185, 162, 181, 193

Q: students sleep less than they are recommended. He/she asked 17college students how long they slept…

A: It is an important part of statistics. It is widely used.  Since the question has multiple sub parts…

Q: he mean life of a battery is 50 hours with a standard deviation of 7 hours. The manufacturer…

A: Given data,Mean μ=50standard deviation σ=7P(X<40)=?

Q: The grades of a statistics midterm are normally distributed with a mean of 70 and a standard…

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Q: An airline charges $25 for the first bag, $35 for the second bag 54% have no checked baggage,  34%…

A:

Q: At a supermarket, the mean waiting time to get to the checkout counter is 5 minutes and the standard…

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Q: A tire company finds the lifespan for one brand of its tires is normally distributed with a mean of…

A: GivenMean(μ)=48200standard deviation(σ)=5000

Q: A doctor is researching the proper dosage for a patient’s cholesterol medication. The dosage of the…

A:

Q: Full-time college students report spending a mean of 29 hours per week on academic​ activities, both…

A: Givenmean(μ)=29standard deviation(σ)=4sample size(n)=64

Q: Airline companies are interested in the consistency of the number of babies on each flight, so that…

A: Test for Variance: The χ2 Chi-Square test is used to test the significance difference between…

Q: What is the standard deviation for the number of contacts in eight attempts?

A: Let , X be the number of attempt to reach a live person. Here , X has binomial distribution with…

Q: A marketing manager plans to market and sell a certain product to improve     companies profit.…

A: (1)  Product A:  Mean(μ1) = 100,000 Standard deviation(σ1) = 2000 Product B: Mean(μ2) = 100,000…

Q: Suppose you wish to invest money safely and are trying to decide between stock options in two…

A: The average rates of return are the same for both companies but, one company has a much larger…

Q: The birth weights for two groups of babies were compared in a study. In one group the mothers took a…

A: Given, n1 = 165       n2 = 127        x1 = 3402     x2 = 3027σ1 = 723        σ2 = 791Level of…

Q: A set of final examination grades in an introductory statistics course is normally dis-tributed with…

A: Given that  Mean=mu=79 Standard deviation=sigma=12 X~Normal (mu=79,sigma=12) Note: According to…

Q: ​Full-time college students report spending a mean of 29 hours per week on academic​ activities,…

A: From the provided information, Mean (µ) = 29 hours Standard deviation (σ) = 4 X~N (29, 4) Here X be…

Q: eachers’ salary in New York and Massachusetts lead the list of average teacher salaries in the US.…

A: The Given data is suitable for difference of means.

Q: Ashley and Delaney began arguing about who did better on their tests, but they couldn't decide who…

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Q: A football coach claims that the average weight of all the opposing teams’ members is 210 pounds.…

A: Consider that μ is the true average weight of all the opposing teams’ members.

Q: The amount that people pay for their cellphone service is normally distributed with a mean of $136…

A:

Q: aking the Graduate Management Aptitude Test averaged 812 with a standard deviation of 145. Only…

A: Given: Meanμ=812Standard deviationσ=145 Consider, X be the random variable that shows the average…

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 225…

A: Given that  The tallest living man at one time had a height of 225 cm. The shortest living man at…

Q: A final exam in Math 160 has a mean of 73 with a standard deviation of 7.8. If 24 students are…

A: Given n=24 Mean=73 Standard deviation=7.8

Q: The average rancher has a mean 2500 head of cattle. After a vegetarian riot in Montana, the hope is…

A: Our sample mean(x-bar) = 2458 and standard deviation(s) = 88 sample size(n) = 26 Our null…

Q: Three high school basketball teams measured the heights of all of their basketball players: The…

A: From the provided information, Derby Dragons have a mean height of 72.0 inches that is (µ1) = 72.0…

Q: Researchers doing a study comparing time spent on social media and time spent on studying randomly…

A:

Q: An investigator predicts that dog owners in the country spend more time walking their dogs than do…

A: Given : Country Owners : n = 21 x1 = 15s1 = 4 City Owners : n = 23 x2 = 10s2 = 3

Q: high school students across the nation compete in a financial capability challenge each year by…

A: It is given that, the students who score in the top 13 percent are recognized publicly for their…

Q: 6) A music industry professional claims that the average amount of money that an average teenager…

A: Given that  Hypothesized Population Mean (\mu)(μ) = 5050 Population Standard Deviation…

Q: Coronary bypass surgery: The Agency for Healthcare Research and Quality reported that 53% of people…

A:

Q: burban Families Watched An Average Of μ = 60 Minutes Of Television Each Day. Assuming That The…

A: Given dataMean µ = 60 minStandard deviation σ = 25 minutesa) proportion of 2-year-old children watch…

Q: In a recent survey,80% of the community favored building a health center in their neighborhood.…

A: Obtain the standard deviation of the numbers favorite the health center.   The standard deviation of…

Q: Scenario: A researcher believes that food servers in her city who are women earn less than food…

A: Given Data : For Sample 1 x̄1 = 38600.0 s1 = 1300.0 n1 = 41 For Sample…

Q: Two seemingly equally excellent students are vying for an academic honor where only one must have to…

A: First, we will calculate the standard deviation for both the students. Both students have the…

Q: . A medical statistician wants to estimate average weight loss of people who are on a new diet plan.…

A: Given : Margin of error, ME = 2.0 population standard deviation, σ = 10.0…

Q: The average rancher has a mean 2500 head of cattle. After a vegetarian riot in Montana, the hope is…

A: State the hypotheses That is, there is no evidence to conclude that average rancher has a mean head…

Q: How does a nonzero constant number c change a standard deviation problem?

A: Standard deviation is independent of change of origin but it affects by the change of scale.

Q: On average, Upstate Chevrolet sells 20 cars each week, with a standard deviation of 2. How many…

A: As per guidelines we are allowed to maximum of three sub parts.22) If you need help with other sub…

Q: Airline companies are interested in the consistency of the number of babies on each flight, so that…

A: Given n=23 sample standard deviation, s = 9 population standard deviation, σ = 6 and  α = 0.05

Q: Peter scored 72 in a quiz in Algebra for which the average score of the class was 65 with a standard…

A:

Q: The best male long jumpers for State College since 1973 have averaged a jump of 263.0 inches with a…

A: Given, xM=263 inchesσM =14 inches xF=201.2 inchesσF=7.7 inches Joey's average = 275 inches Carla's…

Q: A college admissions officer believes that students enrolling from Shawnee school District have…

A: Solution: Given information: n1=30 Sample size of Shawnee school Districtn2=30 Sample size of West…