subject
Mathematics, 11.02.2020 00:09 Diego4519

The manager of a grocery store estimates that 74% of customers will make a purchase.

Part A: How many customers should a cashier expect until he finds a customer that makes a purchase?

Part B: What is the probability that a cashier helps 3 customers until he finds the first person to make a purchase?

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 16:50
Which of the following points is collinear with (-2,1) and (0,3)
Answers: 3
question
Mathematics, 21.06.2019 23:00
Match the vocabulary to the proper definition. in probability, two events in which 1. conditional probability the outcome of one event is independent of the outcome of a second event. 2. dependent events in probability, two events in which the outcome of one event is dependent on the outcome of a second event. the probability of an event in which the outcome of the event is conditional on the outcome of one or more different events. 3. independent events
Answers: 2
question
Mathematics, 22.06.2019 02:20
Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test
Answers: 2
question
Mathematics, 22.06.2019 02:30
According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.
Answers: 3
You know the right answer?
The manager of a grocery store estimates that 74% of customers will make a purchase.

Par...
Questions
question
Mathematics, 19.10.2021 03:00
Questions on the website: 13722363