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: A shareholders’ group, in lodging a protest, claimed that the mean tenure for a chief executive…

A: Given: Sample Standard Deviation (s)(s) = 6.326.32 Sample Size (n)(n) = 9090 Sample Mean…

Q: An insurance company is reviewing its current policy rates. When originally setting the rates they…

A: we have given that n=40 ,mu=1800 , xbar=1950 and sigma=500 , alpha =0.05

Q: A sample of 23 provided a sample mean of 158 and a sample standard deviation of 20. Find the value…

A: Given that Sample size n = 23 Sample mean = 158 Sample SD = 20

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: A shampoo production line operates with a mean filling weight of 16 ounces per container. From past…

A: The given sample size is 50, sample mean is 16, and known population standard deviation is 0.8.

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

A: Solution: n= 8 Sample size  μ= 26  Population mean  x (x-x) (x-x)2 28 1.25 1.5625 27 0.25…

Q: A study is made comparing the cost to rent a one-bedroom apartment in Cincinnati with the…

A: From the provided information,

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: Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the…

A: As per Bartley guidelines expert have to answer first question three subparts only dear students…

Q: Calculate the sample estimate of the standard error of the mean. Show all work.    b. Construct a…

A: Given that Sample size n = 36 Sample mean = 6.8 Sample SD = 1.2 The critical value of t at 98%…

Q: Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the…

A: Given that  Sample size n =15 Sample mean =5.4 Standard deviation =2.7 NOTE:- According to bartleby…

Q: According to the Vivino website, the mean price for a bottle of red wine that scores 4.0 or higher…

A: The significance of the mean is for known population mean and unknown population standard deviation…

Q: A sample of 510 homes for sale in ABC City showed a man asking price of $258,000, but the city…

A: Given Information :  A sample of 510 homes for sale in ABC City showed a man asking price of…

Q: The amount of money raised by Clayton State teams for the Statistics Games is normally distributed,…

A: As per our guidelines we are suppose to answer only one question. Given,mean(μ)=$360standard…

Q: Given a sample mean of 94.3, a sample standard deviation of 8.4 and a sample size of 6, test the…

A:

Q: When testing a hypothesis about a single mean, if the sample size is 51 and the population standard…

A: From the provided information, Sample size (n) = 51 The population standard deviation is known.

Q: A pipes manufacturer makes pipes with a length that is supposed to be 19 inches. A quality control…

A:

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

A: Given that a tire manufacturer producing tire with an average life expectancy of μ=26 ( in thousand…

Q: According to the Vivino website, suppose the mean price for a bottle of red wine that scores 4.0 or…

A: Solution (a) Let μ denotes the population mean price in Providence for a bottle of red wine that…

Q: In the 2018 GSS, a random sample of 1419 adults were asked how many hours per week they usually…

A: Given Data : Sample Size, n = 1419.0 Sample Mean, x̄ = 7.15 standard…

Q: An ice cream company owns two plants, namely A and B, and wants to test using a 5% significance…

A: Given: The two plants of ice cream company are A and B. The level of significance is α=0.05. The…

Q: According to the Vivino website, the mean price for a bottle of red wine that scores 4.0 or higher…

A:

Q: A pipes manufacturer makes pipes with a length that is supposed to be 19 inches. A quality control…

A:

Q: Suppose that a manufacturer of laptop batteries claims that his product last more than 950 hours.…

A: Given data : sample size, n = 45 sample mean, x̄ = 925.0 sample standard…

Q: the chamber of commerce of a florida gulf coast community advertises that area residential property…

A: The average weight has gone down. H0 : μ ≤125000. Alternative hypothesis: Ha :μ  >125,000 Since…

Q: According to the Vivino website, suppose the mean price for a bottle of red wine that scores 4.0 or…

A: mu = 32.48 xbar = 30.15 s = 12 n = 61

Q: According to the Vivino website, suppose the mean price for a bottle of red wine that scores 4.0 or…

A: Given: Population mean μ = $32.48 Sample size n = 59 Sample mean X = $30.15 Sample standard…

Q: A simple random sample of 35 horror has a mean duration of 107.3 minutes and the sample sandard…

A: a) Consider that μ is the true mean duration time of horror films. Here, it is needed to know…

Q: Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the…

A: The sample size n is 13.

Q: A pipes manufacturer makes pipes with a length that is supposed to be 18 inches. A quality control…

A:

Q: According to the Vivino website, the mean price for a bottle of red wine that scores 4.0 or higher…

A: We have given that  Sample size n=56 , standard deviation s=12 ,sample mean xbar=30.15

Q: The manager at a local grocery store thinks customers might benefit from a self-checkout aisle…

A: Solution: We are given that the manager decides to analyze the standard deviation of the wait times…

Q: A high school athletic director is asked if basketball players are doing as well academically as the…

A: Given that  Sample size n =20 Sample mean =3.18 Sample standard deviation =0.54

Q: An IT consultancy in Singapore that offers telephony solutions to small businesses claims that its…

A: Given: Sample sizen=25Sample meanx¯=70.2Sample standard deviations=8.4

Q: A study is made comparing the cost to rent a one-bedroom apartment in Cincinnati with the…

A: From the provided information,

Q: Antelope Coffee, Inc., is considering the possibility of opening a gourmet coffee shop in Big Rock,…

A: mean = μ = 70000 standard deviation = σ = 5000

Q: The south African department of health is concerned that the average percentage mark-up on a…

A: The sample size is 40, sample mean is 49.1%, population mean is 41% and population deviation is…

Q: In attempting to improve student services, a college investigates its registration process and finds…

A: If x¯1 and x¯2 are the means of two independent sample of size n1 and n2 with sample deviation s1…

Q: A manufacturer of electronics will not accept a shipment of parts from a vendor if there is reason…

A: Solution: Given information: n= 30 Sample size μ= 100 ohms    Population mean x= 96 ohms Sample mean…

Q: A pipes manufacturer makes pipes with a length that is supposed to be 16 inches. A quality control…

A:

Q: The average production of peanuts in Virginia is thought to be 3000 Ibs per acre. A random sample of…

A:

Q: St. West High School requires that students are assigned an average of 2.5 hours of homework each…

A: From the provided information, Sample size (n) = 16 Sample mean (x̅) = 2.8 Sample standard deviation…

Q: at teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that,…

A: According to the given information in this question We need to identify the correct conclusion

Q: A pipes manufacturer makes pipes with a length that is supposed to be 12 inches. A quality control…

A: Denote μ as the mean length of all pipes.

Q: A farmer picks pumpkins from a large field. The farmer makes samples of 260 pumpkins and inspects…

A: Solution:From the given information, the sample of pumpkins is 260, in one in50 pumpkins are not fit…

Q: The General Electric Company clams that the life of LED light bulbs are has a mean life of 500 hours…

A: Given : Claim :  Life of LED light bulbs are has a mean life of 500 hours  S.D (σ) = 50 hours Sample…

Q: For a hypothesis test that compares the standard deviations (SD) of two contexts, how is the test…

A: Hypothesis test is used when determine (with conditions )the population parameter from the given…

Q: A realtor claims that in a certain neighborhood, the average house is worth $200,000. Having been…

A:

Q: A newspaper in a large Midwestern city reported that the National Association of Realtors said that…

A:

Q: A cellular battery manufacturer claims that his battery when fully charged has mean life of 24 hours…

A: The set or collection of all possible observations is defined as the population.