A claim is made where 15% of all people will join a club if handed a...

A claim is made where 15% of all people will join a club if handed a brochure about it. Of 300 people in a sample who were handed a brochure, 40 joined the club. with .05 level of significance, is there ample proof the claim is true? Explain.

Expert Solution

Solution-

we have given-

A claim is made where 15%(0.15) of all people will join a club if handed a brochure about it. Of 300(N) people in a sample who were handed a brochure, 40(X) joined the club.

For testing given claim z test is calculated after summarise data.

Test results and calculation-

above test results that the null hypothesis Ho is not rejected.

so, there is enough evidence to support the claim that where 15% of all people will join a club if handed a brochure about it.

orchestra answered 1 year ago

. Approximately 10% of all people are left-handed, then the rest of people are right-handed. Consider...

. Approximately 10% of all people are left-handed, then the rest of people are right-handed. Consider a group of 15 people, answer the following question: (You cannot use the binomial table for this problem) (a) State the random variable ?. (2 points) (b) Explain why this is a binomial experiment. There should be 4 conditions to check. (State the probability of left-handed people ?, the possible outcomes, and the number of trials ? in the conditions.) (4 points) (c) Find...

Approximately 10% of all people are left-handed. Consider a grouping of fifteen people. State the random...

Approximately 10% of all people are left-handed. Consider a grouping of fifteen people. State the random variable. Write the probability distribution. Draw a histogram. Describe the shape of the histogram. Find the mean. Find the variance. Find the standard deviation.

1. Given a population in where the probability of someone being left handed is 0.3, people...

1. Given a population in where the probability of someone being left handed is 0.3, people is taken then... Calculate the probability the proportion of left-h

Do left-handed people live shorter lives than right-handed people? A study of this question examined a...

Do left-handed people live shorter lives than right-handed people? A study of this question examined a sample of 949 death records and contacted next of kin to determine handedness. Note that there are many possible definitions of "left-handed." The researchers examined the effects of different definitions on the results of their analysis and found that their conclusions were not sensitive to the exact definition used. For the results presented here, people were defined to be right-handed if they wrote, drew,...

Q1) Last year the government made a claim that the average income of the American people...

Q1) Last year the government made a claim that the average income of the American people was $34100 However, a sample of 25 people taken recently showed an average income of $34,665 with a standard deviation of $3200. Is the government’s estimate too low? Conduct a significance test to see if the true mean is more than the reported average by the government. Use α=0.05. (a) State the null and alternative hypothesis. (b) Calculate the test statistic. (c) Calculate the...

Ahmed is a professional football player in UAE. Aljazeera Club is negotiating with him to join...

Ahmed is a professional football player in UAE. Aljazeera Club is negotiating with him to join the club. The Club presented two offers to Ahmed; the first one is to pay him a big bonus on the signing day of the contract and smaller payments in the future, or a small amount now and bigger payments in the future. Which option should Ahmed accept and why? What about Aljazeera Club, which option is better for them? (The time value of...

Joyce Williams paid $15,000 to join a country club in order to meet potential clients.. Joyce...

Joyce Williams paid $15,000 to join a country club in order to meet potential clients.. Joyce is a self-employed image consultant. This year, she paid $4,300 in greens fees when golfing with clients. She also paid $2,500 for meals at the club when dining with clients. She is planning to deduct $21,800 this year. What amount can she decduct? (what are the rules and sections)? Joyce Williams 425 May Avenue Oklahoma City, OK 73152

Assume that 73% of people are left-handed. If we select 5 people at random, find the...

Assume that 73% of people are left-handed. If we select 5 people at random, find the probability of each outcome described below, rounded to four decimal places: a. There are some lefties (≥ 1) among the 5 people. b. There are exactly 3 lefties in the group. c. There are at least 4 lefties in the group. d. There are no more than 2 lefties in the group. e. How many lefties do you expect? f. With what standard deviation?

Assume that 37% of people are left-handed. If we select 5 people at random, find the...

Assume that 37% of people are left-handed. If we select 5 people at random, find the probability of each outcome described below, rounded to four decimal places: a. There are some lefties ( ≥ 1) among the 5 people. b. There are exactly 3 lefties in the group. c. There are at least 4 lefties in the group. d. There are no more than 2 lefties in the group. e. How many lefties do you expect? f. With what standard...

Assume that 51% of people are left-handed. If we select 5 people at random, find the...

Assume that 51% of people are left-handed. If we select 5 people at random, find the probability of each outcome described below, rounded to four decimal places: a. There are some lefties (≥ 1) among the 5 people. b. There are exactly 3 lefties in the group. c. There are at least 4 lefties in the group. d. There are no more than 2 lefties in the group. e. How many lefties do you expect? f. With what standard deviation?

Question