To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the ABC chemical Company obtained the following data on the time (in minutes) needed to mix the material.  Manufacturer                   Factory 1 Factory 2 Factory 3                   20 28 20                   26 26 19                   24 31 23                   22 27 22                                           Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use alpha =5.00%

Q: Check conditions for the Chi-Square test for independence: The number of people who survived the ti...

A: Given: The contingency table is: Class Male Female Total 1st 134 59 193 2nd 94  25 119 3rd ...

Q: 1) The following data represent the number automobiles arriving at a toll booth during 20 intervals,...

A: Mean for ungrouped data is defined as the sum of all observations divided by the total number of obs...

Q: In an educational institution, the stipends earned by the students in the first year summer internsh...

A: Given: The stipends earned by the students as follows,Stipend earned (in Z) Number of students0 — 49...

Q: Find the 3 median y values

A: To find the three median y-values that would form the summary points of the median-median line: Firs...

Q: A local firm in Quiapo Manila manufactures LED products that have a lifespan that is approximately n...

A:

Q: I asked this question yesterday and the answer was incorrect. Please see previous responses below th...

A: a)  Excel Procedure for Regression: Enter the data for x and y in Excel sheet. Go to Data Click on ...

Q: The previous answer I received was incorrect. I still need help with this. Thank You!   Here are the...

A: The regression equation is given as : y=a+b1x1+b2x2+b3x1x2y=commissionsx1=miles drivenx2=calls madex...

Q: The average size of a farm in one county is 162 acres with a standard deviation of 38 acres. The ave...

A: Solution: The following information is given to us: Let X be the size of farm in a country. The data...

Q: A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is ...

A: The claim is that the mean sodium content in one of its breakfast sandwiches is no more than 927 mil...

Q: For a population with a mean of μ = 40 and a standard deviation of σ = 12, find the z-score correspo...

A: A z-score describes the position of a raw score in terms of its distance from the mean when measured...

Q: How would I interpret the output of an SPSS table, and transform this output into narrative form (as...

A: From the above result, the mean writing scores of males and females are compared. There are 91 male ...

Q: In order to set rates, an insurance company is trying to estimate the number of sick daysthat full t...

A: From the provided information, Standard deviation (s) = 2.8 Margin of error (E) = 1 a) Confidence le...

Q: The manager at a large fitness center keeps track of the amount of time it takes a sample of 65 clie...

A:

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What s...

A: (a) At a 95% confidence level, the z value is 1.96 which can be obtained by using the standard norma...

Q: A painter purchases two types of paints, paint A and paint B. The amount of paint A purchased per we...

A: Expected amount spent by firm on both types of paints combined is as follows μX×PX+μY×PY=40×$3+65×$5...

Q: 10.44

A: Given, Hypothesis: H0 : μ = 20VsHa : μ > 20n = 15t = 3.2     To find, What conclusion is appropri...

Q: please label each part

A: Part (c) It is clear that population standard deviation is unknown indicating that tdf distribution ...

Q: You measure 31 textbooks' weights, and find they have a mean weight of 56 ounces. Assume the populat...

A: Mean = 56Standard deviation = 3.7Sample size = 31

Q: Find the regression equation that best fits

A: 16. Linear: Use Ti calculator to find the regression equation as follows: Select STAT > Edit &gt...

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no ...

A:

Q: The  minimally accepted level of significance is the _____________ level of significance.

A: Significance level α : It is the probability of the null hypothesis  to be getting rejected when the...

Q: What is the difference between a one way anova, a repeated measures anova, and 2 way anova? Are the ...

A: ANOVA test is used to analyze the difference between means of more than two groups. One way ANOVA ha...

Q: BRCA1 mutations in familial breast cancer cases. Of 169 women having breast cancer and a familial ri...

A: It is given that n = 169 and x =27.

Q: There is some evidence that, in the years−198185, a simple name change resulted in a short-term incr...

A: Given mean = 0.82 S.d = 0.13 According to the Chebyshev's theorem at least 100(1-(1/k2))% lies with ...

Q: You have been asked to estimate the proportion of households in Chicago that have two or more vehicl...

A: (a) Here, there is no information about the population parameter. Hence, use the conservative estima...

Q: The table gives the amount of money (in dollars) spent on football by a major university. Letting xx...

A:   Definition: Regression analysis is used measure the association between two are more variables whe...

Q: The Material Requirement Plan ·(MRP) gross requirements for item X are given below for the next 10 w...

A: Given: The material requirement plan for item X is given for net 10 weeks. The lead time and step co...

Q: Use the table below to find the percentage of data items in a normal distribution that lie between z...

A: Use the below table to find the percentages to the left of z = 1.1 and z= 2.6 as follows: From the ...

Q: To determine if there is an association between gender and reading habits, 270 adults are randomly s...

A: Yes, all expected counts are greater than 5.  

Q: Which of these shows the strongest correlation?

A: A scatterplot is a graphic plot in which two sets of data are plotted against each other, along two ...

Q: 1. A large distributor of gasoline claims that 60% of all cars stopping at their service stations ch...

A: 1. The hypothesis is, Null hypothesis: H0: The distributor's service stations in a large city are sa...

Q: Deck & Blacker is a maker of small kitchen appliances. Its economistsestimated the following dem...

A: Given: If the curve is aCIRCLE- supply the center and radiusPARABOLA- supply the direction of the op...

Q: Given the following pairs of z-values, find the area under the normal curve between each pair of z-v...

A: a. z = -0.3 and z = 2 P(z<-0.3)=0.3821 P(z<2)=0.9772

Q: Suppose a geyser has a mean time between eruptions of 92 minutes. Let the interval of time between t...

A:   (a)   Obtain the probability that a randomly selected time interval between eruptions is longer th...

Q: Southern States Bank and Trust monitors its drive-thru service times electronically to ensure that i...

A:

Q: Suppose that a manager is interested in estimating the average amount of money customers spend in he...

A: Solution: From the given information, a 90% confidence interval for the average amount of money cust...

Q: 1.  Using your own words, what does a “Goodness-of-Fit” tell?     2.  What does it mean if the test...

A: A goodness of fit test tells us how good the data fits the considered distribution , by this we mean...

Q: How do I solve this in Excel? Birthweights are distributed Normally, with a mean of 3.39kg and a sta...

A: It is given that the mean is 3.39, the standard deviation is 0.55 and the sample size is 40.

Q: Calculate the following values UCL, if you know that MD=40 and N= 15

A:

Q: Two samples are taken. Find a 99% confidence interval.   Sample 1 Sample 2 Sample size 61 49 ...

A: The objective is to find the 99% confidence interval for the difference of means. Sample size, n1= 6...

Q: A researcher knows the scores on a creativity test are normally distributed with u=60 and a=20.  He ...

A: Hi, the question have more than 3 parts. As per the guidelines I am obliged to answer first three pa...

Q: h6. "A carpet manufacturing company is comparing the tensile strengths of two different types of syn...

A:

Q: To determine if there is an association between gender and reading habits, 270 adults are randomly s...

A: Given that, To determine if there is an association between gender and reading habits, 270 adults ar...

Q: Solve the following problems based on the step-by-step procedure of the Non-Parametric Tests. Show c...

A: We have to check is there a significant linear correlation between x and y. The null and alternative...

Q: The weights of oranges in a harvest are normally distributed, with a mean weight of 150 grams and st...

A: Given: μ=150 and σ=10 a) Here, x=160, thenz=x-μσ=160-15010=1010=1

Q: You work for a soft-drink company in the quality control division. You are interested in th standard...

A: Given Information: Sample size (n) = 18 To estimate the population standard deviation at 80% level o...

Q: X is distributed as a Normal random variable with mean of 100 and a standard deviation of 10 (i.e X~...

A: Given information- We have given that- X ~ N (100,10) Population mean, µ = 100 Sample size, n = 20 P...

Q: The critical z-scores that correspond with the .01 level of significance are: 1) +/- 2.58 2) +/- 1.9...

A: Note: Hi there! Thank you for posting the question. As there are +/- signs in the options, hence, it...