different from one another. They randomly sample 50 residents of town A and find an average income of $65,382 with a standard deviation of $12,352. They randomly sample 60 residents of town B and find an average income of $73,692 with a standard deviation of $5,561. What should the alternative hypothesis be? Group of answer choices µd≠0 µ1≠ µ2 µ1= µ2 µd=0

Q: Below are the jersey numbers of 11 players randomly selected from a football team. Find the​ range,…

A: The formula of mean is given below.

Q: winter months in Virginia have a mean of 62o F. A meteorologist in southwest Virginia believes the…

A: We have given that  Sample size n= 30 Sample mean = 59 Standard deviation = 6.21 P-value = 0.007

Q: An online stock trading company makes part of their revenue from clients when the clients trade…

A: We have given that  Sample size n=83 , sample mean = 90 Standard deviation = 15  Population mean =…

Q: In a random sample of 23 private school teachers in queens county the average teaching experience is…

A:

Q: est that students who complete the core curriculum are ready for college-level mathematics? That is,…

A: Given n=250 X-bar=21.4 Standard deviation=3.3

Q: A study is done by a community group in two neighboring colleges to determine which one graduates…

A: Denote μ1, μ2 as the population mean numbers of math classes for College A and B, respectively.

Q: If the standard deviation of sample A  is 5 and the standard deviation of sample B  is 12, what is…

A:

Q: The mean time spent solving this problem is 4.25 minutes with a standard deviation of 1.7 minutes.…

A: Given Information: Population mean (u) = 4.25  Standard deviation (s) = 1.7 Sample size (n) = 32…

Q: You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting time at…

A:

Q: When 41 people are used the Weight Watchers diet for one year, their weight losses had a standard…

A: Hypotheses:H0: σ² = 36H1: σ² ≠ 36(Note: The value 36 comes from squaring the standard deviation of…

Q: The average salary of North Carolina is reported to be $50,781. After completing a survey of 120…

A: Given,   Sample size = 120 Sample mean = 51203 Sample standard deviation = 2409   Set up the null…

Q: 3) A researcher records the following scores on a working memory quiz for two samples. Which sample…

A: We have given the scores of the memory quiz for two samples.Sample A: 2, 3, 4, 5, 6, 7, 8Sample B:…

Q: The Australian government would like to assess the impact of employment in different sectors on the…

A: Given that 13 men employed in the public sector   and 6 men employed in private sector are surveyed.

Q: In general, train commuting time for VU students travelling to campus from home is normally…

A: Given that :mean (μ)=52 Standard deviation (σ)=7 Let X be the random variable of the students who…

Q: An online stock trading company makes part of their revenue from clients when the clients trade…

A: sample mean (x̄)  = 82 population mean (µ) = 85 sample size (n) = 120 sample standard deviation (s)…

Q: The amount of coffee people drink per a day is a mean of 14 ounces and standard deviation of 5…

A: We have to find given probability...

Q: 4 An LED lightbulb manufacturer produces lights with a mean lifespan of 10,000 hours and a standard…

A: Given information- Population mean µ = 10,000 hours Population standard deviation, σ = 1,000 hours…

Q: A sample of 9 production managers with over 15 years of experience has an average salary of $71,000…

A: The objective of this question is to determine the sample size needed to estimate the true mean…

Q: A company is doing a hypothesis test on the variation in quality from two suppliers. Both…

A: Given , Supplier 1 : Sample size = n1 = 31 Sample standard deviation = s1 = 4.0623 Supplier 2 :…

Q: A village head wants to know the number of chickens in his area. So the Lurah conducted research on…

A:

Q: If it is known that a town with population 30,000 had 3,170 people who drive a Prius hybrid vehicle.…

A: Solution: The proportion of population who drive a Prius hybrid vehicle is From the given…

Q: Suppose the mean height in inches of all 9th grade students at one high school is estimated. The…

A: Data given n=7  75, 60, 74, 71, 67, 73,64 Standard deviations σ=2

Q: The number of cars running a red light in a day, at a given intersection, possesses a distribution…

A: From the provided information, Mean (µ) = 3 Standard deviation (σ) = 1 X~N (3, 1)

Q: Conduct a hypothesis test showing all of your steps. In a packing plant, a machine packs jars into…

A: As per honor code, we will only answer first three parts: a) Null hypothesis: H0:…

Q: The published proportion of traffic fatalities attributed to motorcycle accidents is 0.14. A…

A:

Q: According to Facebook, the mean number of community pages, groups and events that users are…

A: Given that  Sample size n=64 Sample mean=86 Sample standard deviation =48