The factory manager will decide whether the machine that is owned needs to be replaced with a new component or not. If the components are replaced with new ones, the engine capacity will be better, more products will be produced. For this purpose, the manager conducts research by taking a sample of 5 machines at random, then observing the capacity of the sample machine before and after the components are replaced. If µ1 = the average capacity before the engine is replaced with components, µ2 = the average engine capacity after the new components are replaced, then the critical value for testing the hypothesis (Reject Ho) at a 5% significance level, if:)  t < - 2,132  Z > 1,96  Lainnya (other)  t > 2,132

Q: Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses,…

A:

Q: Identify the type I error and the type II error that corresponds to the given hypothesis. The…

A: here given ,  Claim :  the proportion of people who write with their left hand is equal to 0.19…

Q: Small sample: Twenty one concrete blocks were sampled and tested for crushing strength in order to…

A: Given Information: Sample size n=21 x=19 were sufficiently strong.

Q: If you want to be 95​% confident of estimating the population proportion to within a sampling error…

A: Givenpopulation proprotion(p)=0.37Margin of error(E)=0.05confidence level=0.95

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

A: Consider the marginal totals computed as shown below:   A B C D Total Order Accurate 314 263…

Q: A leading magazine (like Barron's) reported at one time that the average number of weeks an…

A: Given,sample size(n)=35mean(μ)=25standard deviation(σ)=2

Q: Recently, a large academic medical center determined that 13 of 20 employees in a particular…

A:

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: Helping tags: Statistics, Analysis of Relationships Among Variables, Measures of Association, Simple…

A:

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: 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: The owner of Showtime Movie Theaters, Inc., used multiple regression analysis to predict gross…

A: Here Y : Weekly gross revenue($ 1000s) X1: Television Advertising ($1000s) X2: Newspaper…

Q: If you use a 0.03 level of significance in a​ (two-tail) hypothesis​ test, what is your decision…

A: Given info: level of significance: α=0.03 Tail of the hypothesis​ test: two-tail   Hypotheses: H0:…

Q: If you roll a 64 sided die 100 times; what is the percentage of chance that you will see all the…

A: Given: Number of trials = n = 100 Possible values when a die is rolled: 1 to 64

Q: mistake six burned out light bulbs (B) have been mixed up with 4 good (G) ones. If a random sample…

A: Given that ; Bad bulbs ( B) = 6 Good Bulbs ( G) = 4 Total bulbs (N) = 6 +4 = 10 By using combination…

Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A:

Q: By mistake six burned out light bulbs (B) have been mixed up with 4 good (G) ones. If a random…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

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

A:

Q: A bottled water distributor wants to estimate the amount of water contained in 1​-gallon bottles…

A: According to the given information, we have Confidence level = 99% Sample mean = 0.983 Sample…

Q: There are 40 chocolates in a box, all identically shaped. There 16 are filled with nuts, 13 with…

A: It is given that  Total number of chocolates = 40 Number of nut candies = 16 Number of caramel…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: The question is about prob. dist. Given : Popl. mean annual salary ( μ ) = 167000 dollars Popl. std.…

Q: The pulse rates of 174randomly selected adult males vary from a low of 39 bpm to a high of 111 bpm.…

A: Given,low value=39 bpmhigh value=111  bpmmargin of error(E)=3α=1-0.99=0.01α2=0.005Z0.005=2.58…

Q: IQ scores are normally distributed with a mean of 100 and standard deviation of 15. What is the…

A: GivenMean(μ)=100standard deviation(σ)=15

Q: f the manager of a bottled water distributor wants to​ estimate, with 95​% ​confidence, the mean…

A: Given,margin of error(E)=0.004standard deviation(σ)=0.04α=1-0.95=0.05α2=0.025Z0.025=1.96     (from…

Q: A sociologist randomly selects single adults for different groups of three, and the random variable…

A: x P(x) 0 0.088 1 0.346 2 0.401 3 0.165 Total 1

Q: Which of the following is the best measure of central tendency for race? Mode:1 Mean:1.32 Median:1

A:

Q: You measure 47 watermelons' weights, and find they have a mean weight of 35 ounces. Assume the…

A:

Q: If, in a sample of n = 30 selected from a normal population, X= 57 and S=20, what is your…

A: Given Population mean = 50 Sample mean =57 Sample standard deviation =20 We have to answer for…

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: Introduction: It is of interest to test whether the population proportions of men who own cats, and…

Q: A food safety guideline is that the mercury in fish should be below 1 part per million​ (ppm).…

A: From the provided information, Sample size (n) = 7 Confidence level = 98%

Q: O No, the confidence in

A: A genetic experiment with peas resulted in one sample of offspring that consisted of 423 green peas…

Q: ngth it takes a group of Senior Citizens to play the one game of Candy Cr 3 minutes and a standard…

A: a) The length of the time normally distributed with mean 3 and SD of 1 μ=3σ=1 b) The amount of…

Q: A student wishes to see if at her school the proportion of underclassmen who do not have have a job…

A: Given,n1=257 , x1=55n2=288  ,  x2=45p^1=x1n1p^1=55257=0.21401p^2=x2n2p^2=45288=0.15625pooled…

Q: The ADL(p, q) model is represented by the following equation: A. Yt= Bo + B₁ Yt-1 + B₂YE-2+...+…

A: We take two variables. 1.  Dependent 2.  Explanatory In ADL model,   Regressors may include( lagged…

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: Systolic blood pressure levels above 120 mm Hg are considered to be high. For the 100 systolic blood…

A: Given that : u = 120 mm Hg Mean = 120.48000 ? = 15.73549 By using the one sample mean z test we…

Q: Class 61-64 65 67 68 69 70 Class Midpoint 63.0 66.5 69.0 70.5 71-72 72.0 73-76 75.0 77-80 79.0…

A: Given data setclass             class midpoint61-64                6365-67                66.568-69…

Q: A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus…

A: Part 1.   Suppose μ is the population mean bus miles between mechanical road calls.

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

A:

Q: In a random sample of 500 items where 90 were found to be​ defective, the null hypothesis that 15​%…

A: Given Information: Sample size n=500 Null Hypothesis H0:π=0.15 Alternative Hypothesis H1:π≠0.15…

Q: 2. It is beneficial to be able to estimate the weight of a tree based on measurements of the tree…

A: Given, It is beneficial to be able to estimate the weight of a tree based on measurement of the tree…

Q: 1. For the continuous distribution below, find each of the following probabilities: a. P(X c) c.…

A: We have to determine the probabilities on the basis of given probability distribution graph. Note :…

Q: A clinical trial was conducted to test the effectiveness of the drug zopiclone for treating insomnia…

A: Suppose µ is the mean wake time for a population with zopiclone treatments.

Q: The average mpg usage for a 2017 Toyota Prius for a sample of 10 tanks of gas was 45.5 with a…

A: Introduction: Denote μtoy, μford as the true average mpg usage for the 2017 Toyota Prius and Ford…

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 custodian wishes to compare two competing floor waxes to decide which one is best. He believes…

A: Formula : Test statistic

Q: A cellphone provider has the business objective of wanting to estimate the proportion of subscribers…

A: According to the given information, we have Sample size, N = 500 Confidence level = 99% 135 of the…

Q: The overhead reach distances of adult females are normally distributed with a mean of 200 cm and a…

A: From the provided information, Mean (µ) = 200 Standard deviation (σ) = 7.8 X~N (200, 7.8) Here X be…

Q: If n = 81, -45, and s to one decimal place. = 8, construct a confidence interval at a 90% confidence…

A: