AP STAT: UNIT 5 MC

Every Thursday, Matt and Dave's video adventure has "roll-the-dice" day quotation day. If the customer rolls the dice and rents a second movie every Thursday for 30 consecutive weeks, what is the proximate probability that the total amount paid for these second movies will exceed $15?

0.14

Five estimate is for a perimeter are being evaluated. The true value of the parameter is zero. Simulations of 100 random samples, each of size and, are drawn from the population. For each simulatedsample , The five estimates are computed.

Estimator B. The graph Centered around 0 and has a frequency of 40.

The sampling distribution of the sample mean is close to the normal distribution...

If n is large, no matter what of n or what the distribution of the original population

A bank surveyed all of its 60 employees determine the proportion who participate in volunteer activities. Which of the following statements is true?

The bank does not need to use an inference procedure to determine the proportion of employees who participate in volunteer activities because the survey was a census of all employees

Julie generate a sample of 20 random integers between zero and nine inclusive.She records the number of 6's in the sample. She repeats this process 99 more times, requiring the number of 6's and each sample

The binomial distribution with n= 100 and p = 0.1

The histogram below represents data obtained after the senses of entire population was conducted. Which of the following histograms is most likely the histogram of that sampling distribution.

The graph that looks like to white boobs.

The graphs of the sampling distribution, one and two, of the sample mean of the same random variable for samples of two different sizes are shown above. Which of the following statements must be true about the sample sizes

The sample size of 1 is greater than the sample size of 2.

Which of the following is an incorrect statement...

There are some statistics for which the sample distribution is not approximately normal, no matter how large the sample size

A Chessmaster wins 80% off her games, loses 5%, and draws the rest.

X takes on the values of 0, .5, 1, 1.5 , and 2 with respective probabilities 0.0025, 0.015, 0.1025, 0.24, and 0.64

Random samples of size and are drawn from the population. The mean of each sample is calculated, understand aviation of the set of sample means is found.

it will be half as large

Which of the following is the central limit theorem?

the central limit theorem refers to something else.

Sample error is...

the difference between a population parameter and an estimate of that parameter

A recent study was conducted to investigate the duration of time required to complete a certain manual dexterity task. The reported mean was 10.2 seconds with a standard deviation of 16.0 seconds

0.2743

A recent survey concluded that the proportion of American teenagers who have a cell phone is 0.27. The true population proportion of American teenagers who have a cell phone is 0.29.

0.29, sqrt. (0.29)(0.71)/1000

Hospital administrators wish to determine the average length of stay for all surgical patients.

50

Where is a sample distribution?

A distribution of all the values taken by a statistic from all possible samples of a given size

Which of the following is a true statement about sampling...

A sample of more than 10% of the population is too large for statistical inference

There were 5317 previously owned homes sold in a western city in the year 2000. The distribution of the sales prices of these homes was strongly right skewed, with a mean of 206,274 and a standard deviation of 37,881.

Approximately normal with mean $206,274 and standard deviation $3,788

Sampling error occurs...

Because a sample statistic is used to estimate a population parameter

In general, how does tripling the sample size change the confidence interval size...

It divides the interval size by 1.732

The mean and send ovation of the population are eight and 4.8 respectively. Let S the set of the 125 or the triplets of elements of the original population

mu x= 8, o= <4.8

The random variable describing The number of minutes high school student spend in front of a computer Dailey has a mean of 200 minutes. Samples of two different sizes result in a sampling distributions with the two graphs below. Which of the following is a true statement?

the sample size in A is greater than the sample size in B.

A fair die is tossed 12 times, and the number of 3's is noted. This is repeated 200 times, Which of the following distributions is the most likely to occur?

the with a frequency of 60 concentrated around 2 and an x-axis going out to 6.

Tossing a fair die has outcomes one, two, three, four, five, six with me and 3.5 and standard deviation of 1.708. If a fair die is thrown three times, and the mean of the resulting triplet is calculated, the mean and standard deviation of the set of means from all possible such triplets is...

x= 3.5, o= 0.986