a) in a random sample of 5 customers, 60% of them use a cashpoint machine at least once a month? b) in a random sample of 10 customers at least 80% of them use a cashpoint machine at least once a month?

a) in a random sample of 5 customers, 60% of them use a cashpoint machine at least once a month? b) in a random sample of 10 customers at least 80% of them use a cashpoint machine at least once a month?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

See similar textbooks

Related questions

Q: This question asks you to extend the medical-test example from class. Suppose there is a medical…

Q: what is the nully hypothesis and alternative hypothesis

A: Test is that whether there is a significant relationship between a person's age and the number of…

Q: solve the following problems Assuming that the scores of Grade 11 students in Statistics and…

A: Using normal probability table for finding probability values.

Q: Bayes' theorem for an 'AND’ combined event is: Pr( A 'AND' B) = Pr( A|B )*Pr( B ). When does this…

A: We have given the following statement about the Bayes theorem.

Q: An artičle in the ACT Materials Journal (Vol. 84, 1987, pp. 213-216) describes several experiments…

Q: 2. A random sample of 21 passenger cars at a gasoline station shows that the average volumie or…

A: Hypothesized population mean = 0.7 Sample standard deviation = 1.6 Sample size = 21 sample mean =…

Q: LA population consist of 1, 2, 3 and a sample size of 2 will be taken without replacement.…

Q: The test statistic of z=1.50 is obtained when testing the claim that p≠0.427. Identify the…

A: GivenTest statistic(z)=1.50claim is p≠0.427

Q: Suppose we run the following OLS regression JobStr = B1 + B2 M+ B3 Erp + B, Edu + u to explain an…

A: Solution: Given information: n= 300 Observation k= 3 independent variable F statistic = 30 RSS =…

Q: 21. The most common graph in this class has been the normal distribution, which is symmetric. An…

A: Histogram is used to represent the data to describe whether it is symmetrical or non symmetrical.…

Q: O a. 1.50 O b. 1.00 O c. 0.81 O d. 0.91 What is the SAMPLE standard deviation? О a. 0.61 O b. 0.58 О…

A: given data :…

Q: You want to see if it makes a difference which lane to be in when there is traffic. You randomly…

A: Given Level of significance ɑ=0.10

Q: Tutorial – time series regression analysis Question 4: Consider the following historical sales Use…

A: Given the historical sales data as Year Quarter Sales 2017 1 358 2 317 3 402 4 299 2018…

Q: A supermarket has a self-service checkout area. The management knows that the self-service checkout…

A: Given problem follows Poisson distribution. Expected number of customer arrivals = λ= 4 => C ~…

Q: Find the probability of getting a 4 of a kind hand when 5 cards are dealt from an ordinary deck.…

A: here in standard deck there are total 52 card there are total 4 suit and each suit have 13 card…

Q: An automobile insurance company claims that its rates for teenage drivers average $470 less per year…

A: Given: population mean = 470sample size=30sample mean = 435std deviation =65

Q: How many degrees of freedom do you have in this test? O1 3

Q: What is the of the mean 0. P(X=x) 0.15 0.20 0.15 0.50 3.

Q: Perform a chi square test of the independent on the following data given alpha = 0.05 and the claim…

Q: Suppose we run the following regression JobStr B1 +B2 M+B Erp+ B, Edu + u to explain an individual's…

A: Given regression equation JobStr=β1+β2M+β3Exp+β4Edu+u The sample size =300The number of independent…

Q: 28. Below is a relative frequency bar chart of the number of children in American households. The…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: The second worksheet (in the Excel file linked below the exam) is the pdf of a random variable U,…

A: A discrete random variable is a variable whose values can be obtained by counting. The expectation…

Q: The following are the average grade of a sample of 20 Senior High School students for the first…

Q: An anger-management course claims that, after completing its seminar, participants will lose their…

A: From the provided information, Sample size (n) = 12 Level of significance (α) = 0.02

Q: 8.S.2 Refer to Exercise 8.S.1 0. Compare the before and after populations using a t test at a =…

A: T test are used to test whether there is mean significance exist between the sample and population.…

Q: According to "Reproductive Biology of the Aquatic Salamander Amphiuma tridactylum in Louisiana,"†…

A: Solution Given Information

Q: Given data is 157, 149, 162, 168, 155, 155, 157.48, 165, 157, 157 sample size (n)=10 sample mean =…

A: Given Sample sizen=10 Sample mean=158.2480 Sample variance=29.6284 Sample standard deviation=5.4432…

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

A: For the given data Find the critical values

Q: Problem 1: 1- Plot the p.d.f of Gamma(2, 2) and Gamma(3, 2) in the same plot. 2- Generate 1000…

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

Q: Example 14.6 A company has devised three training methods to train its which of these three training…

Q: In a test of hypothesis Ho: u = 88 versus Ha: u > 88 in a normally distributed population, the…

A: According to the given information in this question We need to identify the correct decision and…

Q: A media report claims that the mean weekly earnings of female full-time workers in Australia was AU$…

A: * SOLUTION :- (1)

Q: R is a Binomially distributed Random Variable such that r~ B(10,0.4 Which of these statements are…

A: 16 Given information: R is Binomially distributed random variable with B(10, 0.4) That is, n=10 and…

Q: Ball-Bearings, Inc. produces ball bearings automatically on a Kronar BBX machine. For one of the…

A: It is given that the mean is 20 and the standard deviation is 0.150.

Q: You wish to test the following claim (Ha) at a significance level of α=0.10. For the context of this…

A: From the provided information, Sample size (n) = 16 Level of significance (α) = 0.10

Q: If n=450 and ˆpp^ (p-hat) =0.48, find the margin of error at a 99% confidence level Give your…

A: Given n=450 and p^=0.48, level of significance ɑ=0.01

Q: 1. A consumer watch group interviewed a random sample of 1000 consumers and asked them if they are…

A: HERE AS PER GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION 1) n = 1000 x= no of consumer…

Q: From an F-table or using Excel, you can infer that the p-value is O Less than 0.01 Between 0.01 and…

A: Step by step procedure to ANOVA table using EXCEL: In Excel sheet, enter Porsche, Mercedes and BMW…

Q: The weights of cans of Ocean brand tuna are supposed to have a net weight of 6 ounces. The…

A: Given Mean =5.97 Standard deviation=0.23 n=42

Q: Interpret the Descriptive Statistics for each treatment combination

A: We have two factors A and B. There are 3 levels of factor A and 4 levels of factor B. So, In total…

Q: Which are the correct null and alternative hypotheses?

A: Test is that whether the number of hours he travel to go to school is 1 hour.

Q: recent study indicated that 29% of the 100 women over age 55 in the study were widows. A.) How large…

A: Given thatMargin of error (E) = 0.05Significance level (α) = 1 - 0.90 = 0.10.

Q: The following are the average grade of a sample of 20 Senior High School students for the first…

A: Given: Significance level = 5 % Sample size = 20

Q: Mary has an assignment to ask at random 30 students in their school about their grades in…

A: Given data is Grades Frequency 95-99 9 90-94 6 85-89 9 80-84 3 75-79 3

Q: (c) Use a calculator to verify that x = 5797, x = 5,606,171, y= 587, y = 67,455 and %3D xy 559,988.…

Q: Netflix is considering a new romcom (romantic comedy) series. Before making a final decision, the…

Q: Assume df = 13 and alpha = 0.05. If Pearson's r = 0.510, then the null _____ and the relationship…

A: Here, df=13 r=0.510 α=0.05

Q: Which are the correct null and alternative hypotheses? O a. Ho: The average grade of the students is…

A: Given : significance level, (α) = 0.05

Q: The third worksheet labeled sample B is a simple random sample with replacement, with seven…

A: Population standard deviation(σ)=4 Sample size(n)=7 The given observations are…

Q: Determine the winner using plurality, Borda count, plurality with elimination and pairwise…

Question

2. A bank claims that 80% of its customers use a cashpoint at least once a month. If
this claim is true, what is the probability that:
a) in a random sample of 5 customers, 60% of them use a cashpoint machine at
least once a month?
b) in a random sample of 10 customers at least 80% of them use a cashpoint
machine at least once a month?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here