a special industrial battery must have a life of at least 400 hours. a hypothesis test is tobe conducted with a .02 level of significance. if the batteries from a particular productionrun have an actual mean use life of 385 hours, the production manager wants a samplingprocedure that only 10% of the time would show erroneously that the batch is acceptable.what sample size is recommended for the hypothesis test? use 30 hours as an estimate ofthe population standard deviation.

Q: The commercial for the new Meat Man Barbecue claims that it takes 16 minutes for assembly. A…

A: a.   In this case, the sample size is less than 30 and the population standard deviation is not…

Q: In a random sample of 60​ computers, the mean repair cost was​ $150 and assume that the population…

A: Given: In a random sample of 60​ computers, the mean repair cost was​ $150  the population…

Q: Students at a major university are complaining of a serious housing crunch. They complain that many…

A: Mean(μ)=14.2 standard deviation(σ)=3.7   From Chebyshev's theorem: At least 75% of the observations…

Q: A computer program designer has developed an online questionnaire that she believes will take a mean…

A: Zcritical=Zα/2=1.6449 H0:μ=12 vs H1:μ≠ 12  n=38, x¯=11.4  and σ=2.2 Z=(X¯-μ)σ/n

Q: Recent Environmental Protection Agency (EPA) fuel economy estimates for automobile models tested…

A: Given that Mean(µ) = 24.8 Standard deviations (σ) = 6.2

Q: A simple random sample of 51 people read The Fellowship of the Ring. It took them an average of…

A: For  people who read The Fellowship of the Ring : Sample Mean 1 (Xˉ1​) = 12.0412.04 Sample…

Q: he sodium content of a popular sports drink is listed as 220 mg in a 32-oz bottle. Analysis of 10…

A: Given, Sample mean (x-) = 228.2 mg Population mean (μ)= 220 mg sample size (n)= 10 sample  S.D. (s)=…

Q: Given a sample mean of 94.3, a sample size of 6, test the hypothesis that the value of the…

A: xbar = 94.3 n = 6 mu = 100 s = 12.5

Q: The commercial for the new Meat Man Barbecue claims that it takes 8 minutes for assembly. A consumer…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Students at a major university are complaining of a serious housing crunch. They complain that many…

A: The objective of the question is to find the percentage of commute distances that lie within certain…

Q: Allstate Batteries advertises and sells a 4 year (48 months) battery.  You work at Consumer Digest,…

A: From the given information, the sample size 36 cars and found a mean of 45 months and standard…

Q: A tire manufacturer has been producing tires with an average life expectancy of 26,000 miles. Now…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: Suppose that you are conducting a test to see if the mean time that an 8-12 year old child spends…

A: Given Data:x¯=3.7 Standard error=0.17529196 Degree of freedom=54 Test-statistic=2.852384 Critical…

Q: Students at a major university are complaining of a serious housing crunch. They complain that many…

A:

Q: Published information indicates that, on average, college students spend less than 20 hours studying…

A: t-test: If the given sample size is less than or equal to 30 and sample standard deviation is given.…

Q: Students at a major university are complaining of a serious housing crunch. They complain that many…

A: Given information: Mean=μ=18Standard deviation=σ=3.9 Chebyshev's theorem: At least 75% of the…

Q: In a random sample of ten ​people, the mean driving distance to work was 19.2 miles and the…

A:

Q: The former manager of the coffee shop in a local bookstore claimed that the mean daily sales were…

A: Givensample size(n)=11Mean(x)=2956.14standard deviation(s)=370α=0.01

Q: Using traditional methods, it takes 11.5 hours to receive a basic flying license. A new license…

A: The sample size is 2020, sample mean is 11.6 hours and sample standard deviation is 1.6. The…

Q: Students at a major university are complaining of a serious housing crunch. They complain that many…

A: From the provided information, Mean (µ) = 17.4 Standard deviation (σ) = 3.5 X~N(17.4, 3.5)

Q: The commercial for the new Meat Man Barbecue claims that it takes 17 minutes for assembly. A…

A: It is given that: Sample mean :x=18 Sample size: n=12 Sample standard deviation: s=2.4

Q: Students at a major university are complaining of a serious housing crunch. They complain that many…

A: a. Consider that a random variable X has expected value μ and standard deviation, σ. Now, according…

Q: Suppose that an advertisement claims the average weight loss for someone on a new fad diet is 15…

A: Given, Sample size = 18 Sample mean = 15.83 Population standard deviation = 4   Under the claim, the…

Q: Using traditional methods, it takes 9.0 hours to receive a basic flying license. A new license…

A: Given information- Hypothesized mean µ = 9.0 hours Sample size (n) = 17 Mean x̅ = 9.2 hours Standard…

Q: A computer program designer has developed an online questionnaire that she believes will take a mean…

A:

Q: The U.S. Center for Disease Control reports that in year 1900, the mean life expectancy is 48 years…

A: Solution: Given information: n1= 29000  Sample size of white population n2= 96000  Sample size of…

Q: 12. To work in the word-processing department at Dewey, Cheatem, and Howe, a large center-city law…

A:

Q: 13 squirrels were found to have an average weight of 790 grams with a sample standard deviation of…

A: Given that  n=13 , Mean=X̄=790 , Standard deviation=S=8.3 95% confidence interval

Q: During an economic crisis, the average value of homes in a community of 36 homes lost $9347 with a…

A: Given information Hypothesized mean µ = $8880 Sample size (n) = 36 Mean x̅ = $9347 Standard…

Q: The commercial for the new Meat Man Barbecue claims that it takes 11 minutes for assembly. A…

A: From the given information, Sample size (n) =11 Sample mean (x¯)=12.2 minutes  Sample standard…

Q: The prices of used books at a large college bookstore are normally distributed. If a sample of 23…

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: What is the null hypothesis? What is the alternative hypothesis? Which of the following test will be…

A: Given that  The mean and standard deviation for the sales division are 10.26 and 8.56,respectively.…

Q: Fry Brothers Heating and Air Conditioning, Inc. employs Larry Clark and George Murnen to make…

A: Hypothesis Test: Independent Groups (t test, pooled variance)                       Larry…

Q: Kennedy High School reported that the mean score on an end of semester physics exam wass 508 with a…

A: Given, Mean score μ=508Standard deviation σ=121Sample size n=200

Q: . Identify the null hypothesis and the alternative hypothesis. Choose the correct answer below. A.…

A: Given that  Sample size n =144 Favorable cases x =66 NOTE:- According to bartleby guidelines expert…

Q: In a random sample of six ​people, the mean driving distance to work was 24.3 miles and the…

A:

Q: A real estate company appraised the market value of 20 homes in a regional suburb in Western…

A:

Q: n a random sample of six mobile​ devices, the mean repair cost was $65.00 and the standard deviation…

A:

Q: CNN/Money reports that the mean cost of a speeding ticket, including court fees, was $150.00 in…

A: