nt Lecture Recordings for Unit 4- 20020.2... https://learn-us-east-1-prod-fleet01-xythos.s3.u... video.snead.edu/BUS272/BUS_272_4-11-2018_.. https://learn-us-east-1-prod-fleet01-xythc Before the Christmas shopping rush began, a department store had noted that the percentage of customers who use a major credit card, the percentage who use the store's credit card, the percentage who pay by personal check, and the percentage who pay with cash are all the same, 25% for each. During the Christmas season, in a sample of 200 shoppers, 47 used a major credit card, 40 used the store's credit card, 49 paid with a personal check, and 64 paid with cash. At a 95% confidence level, test to see if the methods of payment have changed during the Christmas shopping rush. 4.

Question
nt Lecture Recordings for Unit 4- 20020.2...
https://learn-us-east-1-prod-fleet01-xythos.s3.u...
video.snead.edu/BUS272/BUS_272_4-11-2018_..
https://learn-us-east-1-prod-fleet01-xythc
Before the Christmas shopping rush began, a department store had noted that the percentage of
customers who use a major credit card, the percentage who use the store's credit card, the percentage
who pay by personal check, and the percentage who pay with cash are all the same, 25% for each.
During the Christmas season, in a sample of 200 shoppers, 47 used a major credit card, 40 used the
store's credit card, 49 paid with a personal check, and 64 paid with cash. At a 95% confidence level,
test to see if the methods of payment have changed during the Christmas shopping rush.
4.
Expand
Transcribed Image Text

nt Lecture Recordings for Unit 4- 20020.2... https://learn-us-east-1-prod-fleet01-xythos.s3.u... video.snead.edu/BUS272/BUS_272_4-11-2018_.. https://learn-us-east-1-prod-fleet01-xythc Before the Christmas shopping rush began, a department store had noted that the percentage of customers who use a major credit card, the percentage who use the store's credit card, the percentage who pay by personal check, and the percentage who pay with cash are all the same, 25% for each. During the Christmas season, in a sample of 200 shoppers, 47 used a major credit card, 40 used the store's credit card, 49 paid with a personal check, and 64 paid with cash. At a 95% confidence level, test to see if the methods of payment have changed during the Christmas shopping rush. 4.

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: 1.Calculate the Pearson correlation coefficient. (you only need to show the values of SSxy, SSx and ...

A: The table can be made as:

Q: State the null and alternative hypotheses (using appropriate mathematical symbols for the population...

A: State the hypotheses. From the information, given that a job recruiting office claims that the standar...

Q: The sample mean and standard deviation from a random sample of 30 observations from a normal populat...

A: Computing the test statistic for hypothesis test: The test statistic for t test is given by:

Q: A factory received a shipment of 46 hammers, and the vendor who sold the items knows there are 7 ham...

A: the sample size of 7 hammers will have a binomial distribution with parameters n and p. where n=7 Pr...

Q: If a project has an expected time of completion Te of 45 weeks witha standard deviation of 7 weeks, ...

A: a) Calculating the probability: The expected time of completion is 45 weeks and standard deviation i...

Q: QUESTION 39 A professor of women's studies is interested in determining if stress affects the menstr...

A: Click to see the answer

Q: Number 99 D, E, and F

A: Introduction: Confidence interval is the interval estimate of the population parameter. It is the ra...

Q: For the data in the table, find the mean and the median of the monthly high temperatures. Then do th...

A: The given high temperatures are, 17, 23, 30, 41, 54 The mean of the high temperatures is, Median: F...

Q: S. Treatment Placebo H1 H2 A study was done using a treatment group and a placebo group. The results...

A: Null and alternative hypotheses: Null hypothesis: µ1 − µ2 = 0 (equivalently µ1 = µ2) Alternative hyp...

Q: 2.) Suppose 1000 coins are tossed. Use the normal curve approximation to the binomial distribution t...

A: Click to see the answer

Q: A card is selected at random from a standard deck of playing cards.Compute the probability that the ...

A: Introduction: The probability of an event in an experiment is the number outcomes in the experiment ...

Q: The mean price of mid-sized cars in a region is $32,000. A test is conducted to see if the claim is ...

A: Type I error (α): The Type I error is committed, if the null hypothesis is rejected, when it might a...

Q: A modification has been made to the process for producing a certain type of film. Because the modifi...

A: Click to see the answer

Q: Explain why assessing the normality of a variable is often important.

A: Many procedures and analysis in statistical inference require the data to be normally distributed to...

Q: An educational researcher wishes to know if there is a difference in academic performance for colleg...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for y...

Q: A manager for an insurance company believes that customers have the following preferences for life i...

A: Click to see the answer

Q: National data indicates that​ 40% of households own a desktop computer. In a random sample of 570​ h...

A: We are given the following data: Population mean , μ  = 0.40 Sample size, n = 570 Sample mean, x̅ = ...

Q: A population mean is 13. The sample mean is 12.8, and the sample standard deviation is 2. The sample...

A: Solution: From the given information, n=20 and S=2. The standard error would be used to conduct a hy...

Q: A poll of 1731 U.S. adults found that 56% regularly used Facebook as a news source. Find the margin ...

A: The known values are, Critical values: By using the standard normal table of Z, the critical value ...

Q: The analysis of variance methodology will show that there really is a difference between the means o...

A: When the between-group variance is significantly larger than the within-group variance, then there i...

Q: 3. The Acme Company manufactures large capacity Flash drives using two different manufacturing proce...

A: Click to see the answer

Q: A manager for an insurance company believes that customers have the following preferences for life i...

A: It is given that the preferences for life insurance products are 30% for whole life, 30% for univers...

Q: X denotes a binomial random variable with parameters n and p. For each exercise, indicate which area...

A: Click to see the answer

Q: 7.2.11 please

A: Computation of test statistic value: The population standard deviation is given, σ = 3. Thus, in ord...

Q: You have been hired by a local middle school to teach students about drugs and the harms of drug use...

A: Given information- Sample size, n = 10 Significance level, α = 0.05 We have given pre and post data ...

Q: An office supply company services copiers and tracks how many machines are serviced and the length o...

A: Click to see the answer

Q: Solve all of these follwing Question:   (E): A committee of 2 teachers is to be formed in a school s...

A: Hey there! Thank you for the question. As you have posted a question with several sub-parts, as per ...

Q: One assumption of the binomial distribution is that our sample size has to be greater than​ 10% of t...

A: Click to see the answer

Q: A statistics professor has observed that about 13% of the students who initially enroll in his Intro...

A: a) This is a one-tailed test, since the statistics professor tries a statistical software whether it...

Q: Bill Makes $ 9.00 an hour working as an intern for a computer tech company. Bill gets time and a hal...

A:   Normal wage for Bill: It is given that Bill makes $9.00 per hour.

Q: Calculate the margin of error of a confidence interval for the difference between two population mea...

A: Click to see the answer

Q: The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to incre...

A: Let µ1 be the true average reduction in price. Let µ2 be the true average regular price. The aim of ...

Q: On the Navajo Reservation, a random sample of 216 permanent dwellings in the Fort Defiance region sh...

A: It is given that:

Q: The size of the left upper chamber of the heart is one measure of cardiovascular health. When the up...

A: Let x be the left atrial diameters of healthy children Given that x~N(26.4,4.2) with mean 26.4 mm an...

Q: A hypothesis test was conducted to test whether more than​ 50% of recent college graduates had a job...

A: Claim: Test whether more than​ 50% of recent college graduates had a job offer prior to graduation. ...

Q: I need help with part D In the following problem, check that it is appropriate to use the normal app...

A: d. From part (c), using n= 317, p =0.246, q = 1-0.246=0.754. Now we calculate, P(60 ≤X≤80) using con...

Q: A​ 95% confidence interval for the proportion of U.S. adults who subscribe to some sort of streaming...

A: In the above question, we are given,  a confidence interval is 

Q: Suppose that the longevity of a light bulb is exponential with a mean lifetime of eight years.   F...

A: Click to see the answer

Q: An article reports that the average initial rate of absorption (in g/min·cm2) for a sample of five c...

A: Solution: From the given information, x-bar is 4500.8 and Sx=271.6, y-bar is 1299.8, Sy=329.8, nx=5 ...

Q: According to a recent​ study, 80% of adults say they play games on their smartphone. Suppose we rand...

A: Click to see the answer

Q: The birth weights for two groups of babies were compared in a study. In one group the mothers took a...

A: Obtain the 90% confidence interval for the true difference between the mean birth weights for "zinc"...

Q: Chapter 08, Section 8.3, Problem 041

A: Click to see the answer

Q: The probability of an event is given. Find the odds in favor of the event. 0.35

A: The formula for calculating the odds in favor of the event is, The probability of event occurs is 0...

Q: A confidence interval for a population mean has a margin of error of 0.047. a. Determine the length ...

A: (a) The margin of error is, E = 0.047. The length of the confidence interval is, Hence, the length ...

Q: Emissions of nitrogen oxides, which are major constituents of smog, can be modeled using a normal di...

A: From the information, the amount of this pollutant emitted (in parts per billion) by a randomly sele...

Q: Section 9.4 1.) Suppose 16 coins are tossed. Find the probability of getting the following result us...

A: Click to see the answer

Q: The University of Illinois decided to conduct a study at their university. The 90% confidence interv...

A: Click to see the answer

Q: The following random sample was selected from a normal distribution: 4, 6, 3, 5, 9, 3. A. Constru...

A: 90% Confidence Interval is given as:

Q: Chapter 08, Testbank, Question 043

A: Obtain the sample size that would limit the margin of error to be within 0.032 of the population pro...