Math

StatisticsQ&A LibraryThe Information Systems Audit and Control Association surveyed office workers tolearn about the anticipated usage of office computers for personal holiday shopping (USatoday, November 11, 2009). Assume that the number of hours a worker spends doingholiday shopping on an office computer follows an exponential distribution.a. The study reported that there is a .53 probability that a worker uses an office computerfor holiday shopping 5 hours or less. Is the mean time spent using an office computerfor holiday shopping closest to 5.8, 6.2, 6.6, or 7 hours?b. Using the mean time from part (a), what is the probability that a worker uses an officecomputer for holiday shopping more than 10 hours?Start your trial now! First week only $4.99!*arrow_forward*

Question

The Information Systems Audit and Control Association surveyed office workers to

learn about the anticipated usage of office computers for personal holiday shopping (USa

today, November 11, 2009). Assume that the number of hours a worker spends doing

holiday shopping on an office computer follows an exponential distribution.

a. The study reported that there is a .53 probability that a worker uses an office computer

for holiday shopping 5 hours or less. Is the mean time spent using an office computer

for holiday shopping closest to 5.8, 6.2, 6.6, or 7 hours?

b. Using the mean time from part (a), what is the probability that a worker uses an office

computer for holiday shopping more than 10 hours?

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: In a sample of 49 adolescents who served as the subjects in an immunologic study, one variable of in...

A: Click to see the answer

Q: Graduation rates, part III Continuing with the regres-sion of Exercise 1, write a sentence that expl...

A: The given output shows the regression model and associated plots for the graduate rates and acceptan...

Q: The sampling distribution attached shows sample means from samples of size n=50. 1. Using the sampli...

A: 1. The dot plot represents the sampling distribution of sample means from sample of size n=50. From ...

Q: Describe about the z TEST FOR A POPULATION MEAN.

A: Z-test for significance of a single mean: The z-test is appropriate when population standard deviati...

Q: min Z = ax1 + gx2 Subject to the constraints that ax1 + cx2 > 15+b dx1 + 2cx2 s 45+b ex1 + fx2 < 80+...

A: Graphical method: Graphical method is the most simplest method in the statistical analysis. Graphica...

Q: In a survey, the planning value for the population proportion is p* = .35. How large asample should ...

A: It is given that p* = 0.35 and the margin of error is 0.05.

Q: There has been a trend toward less driving in the last few years, especially by young people. From 2...

A: Click to see the answer

Q: Kara categorized her spending for this month into four categories: Rent, Food, Fun, and Other. The a...

A: From the provided information, Total amount spends on food = $311 Total amount spends on rent = $389...

Q: Which is the best measure of variability if you are interested in a gender breakdown of managerial p...

A: The range can be defined as the difference between the highest and the lowest values of a data set. ...

Q: Construct a 90% confidence interval for the true average monthly salary earned by all employees of P...

A: Click to see the answer

Q: What is the parameter?

A: Raymond wants to estimate the percentage of parents that use cloth diapers. He asks a randomly selec...

Q: If the marks of a group of 10 female students in an exam of probability and statistics are as follow...

A: Enter the data of female in Excel.

Q: The accompanying data set consists of observationson shear strength (lb) of ultrasonic spot welds ma...

A: A relative frequency histogram is required. There should be 10 classes, with equal width. The boun...

Q: Experience has shown that the weight of oranges produced by an orchard inTzaneen is normally distrib...

A: Click to see the answer

Q: Stacy has the option of selecting three books to read for a humanities course. The suggestedbook lis...

A: From the given information ,Stacy has the option of selecting three books to read for a humanities c...

Q: Suppose there are 5 students in a room. The mean age is 19.8 years, and the median age is 19. If the...

A: Note: It is assumed that the ages are distinct and conclusions are made based on this assumption.

Q: Qualifying Test Scores To qualify for a medical study, an applicant must have a systolic blood press...

A: Click to see the answer

Q: What are the steps for calculating Interquartile Range?

A: Click to see the answer

Q: how to solve for lower class boundaries

A:

Q: Compute the arithmetic average, variance, and standard deviation of the data set 2(x) = {0.1, 1.3, 1...

A: Click to see the answer

Q: With reference to Example 3, use suitable statisticalsoftware to find the P-value that corresponds t...

A: Note: Thank you for the question. Since Example 3 is not given we have obtained p-value that corresp...

Q: If a variable X is normally distributed with a standard deviation of 8, what is the meanvalue of X, ...

A: Variable X is normally distributed.

Q: 95% of students at school scored between 60% and 80% on a test. Data is normally distributed, 1) Ca...

A: Given 95% of students at school scored between 60% and 80% on a test and this data is normally distr...

Q: A survey of 800 nurses yielded the following information: 430 were health club members, 555 were smo...

A: Given data, Total number of nurses=800 in which Health club member nurses =430 Smokers nurses =555 b...

Q: What are the correct hypotheses? Ho: Select an answer hours H1: ? 0 hours Select an answer Based on ...

A: Given that, µ = 47 Null and alternative hypothesis: H0: The mean of all employees at start-up compan...

Q: Drive-in Movies The data shown represent the number of outdoor drive-in movies in the United States ...

A: According to the provided information, the samples are as follows: 2084 1497 1014 910 899 870 837 ...

Q: A professor wanted to study the number of hours statistics students spend studyingstatistics each we...

A: Given that a researcher studying the number of hours statistics students spend studying statistics e...

Q: Farmer Jones must determine whether to plant corn orwheat. If he plants corn and the weather is warm...

A: Given: Weather Probability Corn (a1) Wheat (a2) Warm 0.6 8000 7000 Cold 0....

Q: The mayor has claimed that the Recession has not affected the towns economy and that it has remained...

A: Click to see the answer

Q: With reference to Example 5, use suitable statisticalsoftware to show that the P-value corresponding...

A: Note: Thank you for the question. Since the question is incomplete we have considered the test as r...

Q: What are Sources of variability and F ratios in one- and two-factor ANOVAs?

A: Click to see the answer

Q: Hello, I need help starting my statistics term paper. Below is what is due this week and I am a litt...

A: Introduction: We have considered estimating the price of a new or first-hand car in the topic “the s...

Q: An airplane has four engines. On a flight from NewYork to Paris, each engine has a 0.001 chance of f...

A: Click to see the answer

Q: Use the frequency distribution shown below to construct an expanded frequency distribution. High Tem...

A: Use the Formula : 1. Midpoint = Upper class - Lower class 2. 3. To find the cumulative relative fr...

Q: A nutritionist is looking at the connection between hours of TV watched and choice of sugary snacks ...

A: Click to see the answer

Q: Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using...

A: For the significance level α is known, the decision based on p-value is given by, If p-value ≤ α the...

Q: Consider a binomial experiment with n = 20 and p = .70.a. Compute f(12)

A: Click to see the answer

Q: Three companies A, B and C supply 25%, 35% and 40% of the notebooks to a school. Past experience sho...

A: Click to see the answer

Q: What is the average miles per gallon (mpg) for all new cars? Using Consumer Reports, a random sample...

A: Click to see the answer

Q: Marc, Kai, and Chris ordered 3 dozen boneless hot wings to share while they watched the game. Marc a...

A: Click to see the answer

Q: . A cohort study is conducted to assess the association between clinical characteristics and the ris...

A: A cohort study is conducted to assess the association between clinical characteristics and the risk ...

Q: The population proportion is .30. What is the probability that a sample proportion will bewithin ±.0...

A: Click to see the answer

Q: How do find the variance like the x and x^2 with theses numbers 1,1,2,4,6,8,8,10,12,25 How do you pe...

A: Click to see the answer

Q: 1- Two balanced 4 sided-dice, each with faces labeled by 1, 2, 3 and4. if Ali plays a game where he ...

A: Click to see the answer

Q: Cris Turlock owns and manages a small business in San Francisco, California. The business provides b...

A: Analysis Of Variance(ANOVA): ANOVA is used to test whether there is a significant difference between...

Q: What do the within-cells (or error) sum of squares equals to?

A: In ANOVA, “SS” stands for “sum of squares”, “df” stands for degrees of freedom, F is for the test st...

Q: Hypnosis. A sample of 100 people was separated into children and adults. The members of each group w...

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case yo...

Q: - Following data is about the CGPA of two classes. Class A: 1.90, 2.01, 3.21. 3.12, 4.00, 2.99, 3.78...

A: Note: Hey there! Thank you for the question. As you have posted multiple questions together, we have...

Q: What does the sampling distribution of the mean allows determining?

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is...

Q: Alimula Company Ltd. wants to know if there is consistency in their operations. They want to know i...

A: