Suppose the P-value is 0.1039 at α equals=0.05. Make a conclusion.
A survey of investors finds that 60% use a full service bro…
A survey of investors finds that 60% use a full service brokerage firm to invest in stocks, 30% trade stocks online and 24% do both. What is the probability that an investor selected at random uses a full service brokerage firm or trades stocks online?
Which of the following is not an assumption and/or conditio…
Which of the following is not an assumption and/or condition required for constructing a confidence interval for the proportion?
A men’s clothing store has determined the following probabi…
A men’s clothing store has determined the following probability distribution for the number of special size orders placed per month. Based on this distribution, what is the standard deviation in the number of special size orders placed per month? Number Ordered Probability 0 0.10 5 0.10 10 0.12 15 0.30 20 0.38
In a particular production process, drying times for newly…
In a particular production process, drying times for newly pained parts are uniformly distributed between 2 and 8 minutes. What is the probability that a part dries in less than 6 minutes?
A researcher is conducting a study to determine how knowledg…
A researcher is conducting a study to determine how knowledgeable teenagers are about making good food choices. She decides to interview teenagers eating at a fast food restaurant. The results may be biased because this is what type of sample?
An advocacy group is investigating whether gender has an eff…
An advocacy group is investigating whether gender has an effect on job category in large investment firms. She surveyed a sample of firms with the results shown in the following table. What is the probability that a randomly selected employee’s job category is executive / managerial given that she is female? Job Category Male Female Clerical / Technical 85 215 Professional Staff 720 480 Executive / Managerial 400 100
As an incentive to get new customers, the local branch of a…
As an incentive to get new customers, the local branch of a bank launched “bouncing for bucks.” During this week long event, any customer opening a new checking account with the bank would have the opportunity to throw a bouncy rubber ball into a large box divided into squares. Each square was labeled with a dollar amount that would be deposited into his/her new checking account. The way the box was labeled is shown below. What is the probability that a customer does not get $50?
A consumer research group investigating the relationship bet…
A consumer research group investigating the relationship between the price of meat (per pound) and the fat content (grams) gathered data that produced the following scatterplot. Which description of the association between fat content and price is more accurate?
15. Seeds of a gymnosperm mature on the surface of the _____…
15. Seeds of a gymnosperm mature on the surface of the _____.