70 Answered Questions for the topic AP statistics

Ap Statistics

1d

What's the probability that at least 4 out of the next 20 customers will buy cake pops? (Hint: remember to show the setup!)

Lindsay knows 48% of people who walk into her dessert show will buy cake pops.
Ap Statistics

1d

What’s the probability Lindsay won’t sell a cake pop until the 9th customer? Round your answer to 4 decimal places.

Lindsay knows 48% of people who walk into her dessert show will buy cake pops.
Ap Statistics

6d

Pew Research reported that, in 2013, 78% of all teens had a cell phone. Assume this estimate is correct. We randomly pick 100 teens.

What’s the approximate probability that less than three-fourths of this sample owns a cell phone?
Ap Statistics

8d

If the ticket to play was actually $5 and not free, determine the new expected winnings and standard deviation.

The County Fair is giving out a free lottery ticket to each person who attends. The organizers tell you that there is a .001 chance that you will win $100, a .002 chance that you will win $50 and a... more

standard deviation question

What happens to the curve when the standard deviation is increased? What does that do to the area under the curve? What happens to the curve when the standard deviation is decreased? What does... more
Ap Statistics Math Statistics

9d

Statistics question with standard deviation

What happens to the curve when the standard deviation is increased? What does that do to the area under the curve? What happens to the curve when the standard deviation is decreased? What does both... more
Ap Statistics

10d

Determine the mean of the weight (in ounces) of the contents of the small gift box.

A candy manufacturer is marketing a small gift box containing one nut cluster bar and one piece of fudge. The manufacturing process for each candy is designed so that the mean weight of the nut... more
Ap Statistics

20d

AP Stats One Question

Burping (also known as "belching" or "eructation") is one way the human body expels excess gas in your digestive system. It occurs when your stomach fills with air, which can be caused by... more
Ap Statistics

20d

AP Stats 1 Question

The way in which response options are presented in a question can affect a person's response. Two hundred randomly selected people were asked about their milk chocolate or dark chocolate... more
Ap Statistics Math

26d

Two AP Stats Questions

QUESTION 1: Twenty students from Sherman High School were accepted at Wallaby University. Of those students, eight were offered military scholarships and 12 were not. The newly accepted student SAT... more
Ap Statistics Math

26d

Two AP Statistics Questions

Question 1:A manufacturer of a new medication on the market for Parkinson's disease makes a claim that the medication is effective in 75% of people who have the disease. One hundred fifty... more
Ap Statistics

26d

AP Stats 1 Question

Students at a local high school were randomly selected to participate in a math fluency program. The program is designed to increase their math fluency. A total of 12 students each took a pretest... more
Ap Statistics

26d

AP Stats Degrees of Freedom

Randall is conducting a test on bacteria on slices of cheese. He uses 10 slices of cheese to compare two strains of bacteria. He applies one strain to the left side of the cheese and one strain to... more
Ap Statistics

26d

AP Stats Hwk 1 Question

Buyers are skeptical of a speed boat advertisement that claims the newest model gets an average of 24 miles per gallon. They believe the dealer is overstating the average. Which null and... more
Ap Statistics

12/16/20

AP Statistics, questions about probability with a deck of 52 cards

We draw 5 cards out of a deck of 52 cards.a. What is the probability that at least of those cards is Jack or a Queenb. What is the probability that the first card picked from those 5 randomly... more
Ap Statistics Statistics

12/14/20

This is a question I got partially incorrect on my last exam, I posted this already and still have gotten no responds. I really need help with this!

In basketball, a player gets two foul shots when fouled. In a random sample of games over Larry Bird’s long NBA career, he hit the second foul shot in 45 of 53 attempts after the first was missed... more
Ap Statistics Math Ap Calculus

11/10/20

AP STAT QUESTION DUE TODAY PLS HELPPPPP!!!!!

A researcher is interested in determining the effectiveness of a new medication that may reduce blood pressure for individuals who have higher than average blood pressure. To determine the... more
Ap Statistics

11/01/20

How do I find the mean and standard deviation from certain percentages to solve this problem?

This is the problem I'm trying to solve:A company that sells machines that fills soda cans has claimed that not only will their machine under-fill only 0.5% of cans, but that 90% of cans will have... more
Ap Statistics

10/22/20

I am having trouble with this question, please help!

Purchases at a supermarket on a busy Saturday afternoon fall into a roughly normal distribution with mean $55 and standard deviation $18. How much do the middle 68% of customers purchase (1... more
Ap Statistics

10/22/20

I am having trouble with this question, please help.

The height of an adult male is known to be normally distributed with a mean of 69 inches and a standard deviation of 2.5 inches. How high should a doorway be so that 99.5% of the adult males can... more
Ap Statistics

10/15/20

AP STAT QUESTION PLS HELP

The number of cavities in school-aged children and size of vocabulary are known to have a strong negative association. Toby concluded that the number of cavities causes a decrease in vocabulary. Is... more
Ap Statistics

10/09/20

AP STAT QUESTION PLS HELP!!

Patrick calculated the correlation coefficient to be 0 when observing the balance in his savings account over a two-year period. He concluded that there is no relationship between the balance and... more
Ap Statistics Math

08/28/20

What is the “who”, “what”, and “population of interest” in the following data description?

Find the “who”, “what” and “population of interest” from this description of data: The state education department requires Local school districts to keep these records on all students: age, race or... more
Ap Statistics Statistics

05/15/20

A farmer wants to determine how much better this new brand of fertilizer (Brand A) is compared to the old one (Brand B). He decides to divide his field into 1000 plots

 He randomly selects 30 plots to receive Brand A and randomly selects 40 plots to receive Brand B. After this process, if the same plot comes up in both samples he throws it out of each sample and... more
Ap Statistics Statistics

05/15/20

An association of Christmas tree growers in Indiana sponsored a sample survey of households to help improve the marketing of Christmas trees

Of 421 households that do display a Christmas tree, 160 lived in rural areas and 261 were urban residents. The tree growers want to know if there is a difference in preference for natural trees... more
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