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Ap Statistics Math Statistics Algebra

05/06/22

Max placed 5 brown bottles and 5 white bottles on a wall for target practice. The probability of him breaking a bottle is 0.95.

What is the probability that he will hit fewer than 8 of the bottles?

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Ap Statistics Math Statistics Algebra

05/06/22

At a high school, 20% of statistics students retake their 3 week test. There are 15 students in Mr. Smith’s class.

Find the probability that exactly four of them retake this test.

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Ap Statistics Statistics

02/24/22

True or false. To have a binomial setting, the following must be true: When sampling, the population must be at least 20 times as large as the sample size. (Some textbooks say 10 times as large.)

I originally believed the answer was false. I thought sampling could be done with replacement. So, the condition, which is only necessary for when the trails are not independent, is not a must to... more

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Ap Statistics Statistics

02/21/22

Fifty patients suffering from knee pain have volunteered to par- ticipate in an experiment to examine the effects of pain relief medication.

Fifty patients suffering from knee pain have volunteered to participate in an experiment to examine the effects of pain relief medication. Half will be assigned to take 400 mg of the pain reliever... more

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Ap Statistics Statistics

02/21/22

A diligent statistics student recorded the length of his faithful #2 pencil as he worked away on his homework.

A diligent statistics student recorded the length of hisfaithful #2 pencil as he worked away on his homework.He discovered a strong linear relationship between thenumber of hours that he worked and... more

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Ap Statistics

12/24/21

AP Statistics help? Free response question

Andrea and Ashley are middle-distance runners for their school's track team. Andrea's times in the 400-meter race are approximately Normally distributed with a mean of 62 seconds and a standard... more

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Ap Statistics

12/24/21

AP Stats help? Free Response question (2 parts)

On the Centerville High School debate team, 20% of the members are Sophomores, 35% are Juniors and 45% are Seniors. A team member is selected randomly to give the closing argument for the team. If... more

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Ap Statistics

11/26/21

Find the probability that more than 70% of the sampled teenagers own a smartphone?

Smartphones: A Pew Research report indicated that 73% of teenagers aged 13–17 own smartphones. A random sample of 150 teenagers is drawn.Find the probability that more than 70% of the sampled... more

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Ap Statistics Math Biology Statistics

10/30/21

Probability Question

Consider a group of nine individuals selected from the AARP (American Association of Retired People) of 50-year-olds and above in the United States. The number of persons in this sample who suffer... more

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Ap Statistics

08/31/21

Analyze the scatterplot to explain the most likely transformation necessary to linearize the data. (2 points)

a The scatterplot resembles a power model, emulating a square root function with a downward curve. Squaring the y-values would linearize the data. b The scatterplot resembles an exponential... more

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Ap Statistics

08/31/21

The data set for the average height of men at a ballgame compared to their shoe size is represented by the table.

Part A: What is the equation of the least-squares regression line? Part B: Carlos wears a size 9 and is 71 inches tall. What is the residual for Carlos's data? Show your work. Part C: Interpret the... more

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Ap Statistics

08/31/21

The scatterplot for age in years and length of legs is shown.

Part A: Estimate and interpret the correlation coefficient. Part B: Create an influential point for this graph that would cause the correlation to decrease. Explain your reasoning.

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Ap Statistics Math Statistics Mathematics

08/28/21

Standard Normal Probabilities Table Question

When using a Standard Normal Probabilities Table, how do you know which number to choose from the top row (0.0, 0.1, 0.2, etc.)

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Ap Statistics Statistics

06/09/21

Margin of error & confidence interval of pop. Mean with large sample

how can I find the margin error & confidence interval for population mean with sample = 138, mean=64 abs standard deviation = 4 confidence level = 90%

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Ap Statistics Statistics Mathematics

05/29/21

AP Stats Questions Pls Help!

What is the value of χ2 for the two-way table? A/ B/ C X 46 21 15 Y 25 32 29 Z 37 23 28 A, B, and C are supposed to be separate columns, sorry the table didn't come out... more

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Ap Statistics Statistics Mathematics

05/29/21

Ap Statistics Question pls Help ASAP!

Which of the statements are correct? (2 points) A condition for using the chi-square goodness-of-fit test is that all expected counts must be at least five. The chi-square goodness-of-fit test uses... more

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Ap Statistics

04/26/21

AP Stats question

Determine the appropriate inference method for each setting below.a) A biologist believes the offspring of certain gupples will have 25% red tails, 50% blue tails, and25% orange tails. She test her... more

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Ap Statistics Math Statistics

04/25/21

Which type of hypotheses test should be done?

I would like to test if players playing rock, paper, scissor choose between these three options randomly, or if certain options are favored above others. Which hypothesis test should be conducted... more

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Ap Statistics

04/25/21

Ap Statistics Question

Mrs. G reads an article in which the author claims 48% of mothers stay at home with their children. Mrs. G does not believe the author of the article, so she obtains a random sample of 200 mothers... more

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Ap Statistics

04/24/21

Ap Statistics Question

Mr. Sprocket is a frugal businessman who commissioned a manufacturing plant to produce gears for his latest venture. Mr. Sprocket wants the gears to have a diameter of 3.6 cm. However, Mr. Sprocket... more

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Ap Statistics Math Statistics

04/19/21

FInd upper and lower bound of 2 samples

The sample of 20 female servers worked an average of 25 hours per week, with a standard deviation of 3. A sample of 26 male servers worked an average of 35 hours per week, with a standard deviation... more

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Ap Statistics

04/11/21

Test for significance by using the confidence interval and hypothesis testing methods

An IQ test has a mean of 100 and standard deviation 10. A Group of 20 college students is given the IQ test and their mean score is 106. Is their evidence at the 05 level of significance that the... more

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Ap Statistics Math Statistics Sat Math

04/06/21

Tom, a holiday light inspector, has to check a shipment of multicolored Christmas lights. Suppose that the probability of a defective lightbulb is 30%.

a. Find the expected number of bulbs that Tom has to go through until he finds one that is defective.b. Find the probability that the first defective bulb that Tom finds is the 8th bulb.c. Find the... more

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Ap Statistics

03/30/21

Which of the following increases the power of a significance test? Increase α Increase the sample size Decrease the variability of the data

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Ap Statistics Statistics Mathematics

03/25/21

AP Stats Questions Pls Help!

Question 1:A new anxiety medication has been manufactured and a study is being conducted to determine whether its effectiveness depends on dose. When 40 milligrams of the medication was... more

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Max placed 5 brown bottles and 5 white bottles on a wall for target practice. The probability of him breaking a bottle is 0.95.

At a high school, 20% of statistics students retake their 3 week test. There are 15 students in Mr. Smith’s class.

True or false. To have a binomial setting, the following must be true: When sampling, the population must be at least 20 times as large as the sample size. (Some textbooks say 10 times as large.)

Fifty patients suffering from knee pain have volunteered to par- ticipate in an experiment to examine the effects of pain relief medication.

A diligent statistics student recorded the length of his faithful #2 pencil as he worked away on his homework.

AP Statistics help? Free response question

AP Stats help? Free Response question (2 parts)

Find the probability that more than 70% of the sampled teenagers own a smartphone?

Probability Question

Analyze the scatterplot to explain the most likely transformation necessary to linearize the data. (2 points)

The data set for the average height of men at a ballgame compared to their shoe size is represented by the table.

The scatterplot for age in years and length of legs is shown.

Standard Normal Probabilities Table Question

Margin of error & confidence interval of pop. Mean with large sample

AP Stats Questions Pls Help!

Ap Statistics Question pls Help ASAP!

AP Stats question

Which type of hypotheses test should be done?

Ap Statistics Question

Ap Statistics Question

FInd upper and lower bound of 2 samples

Test for significance by using the confidence interval and hypothesis testing methods

Tom, a holiday light inspector, has to check a shipment of multicolored Christmas lights. Suppose that the probability of a defective lightbulb is 30%.

Which of the following increases the power of a significance test? Increase α Increase the sample size Decrease the variability of the data

AP Stats Questions Pls Help!

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