AP Statistics 2017

example: Describe the sampling distribution of for samples of size 15 drawn from a normal population w ...

Because the sample size is large (n = 90), the central limit theorem tells us that large sample technique ...

Digression: Before introducing , we have used and s as statistics, and μ and σ as parameters. Often we ...

(b) How many tosses would it take, on average, to flip two heads? Answer : (a) P (first hea ...

of successes of the event during the 60 trials. What are μ (^) x and σ (^) x? (a) 24, 3.79 (b) 24, 14 ...

(d) (e) In a large population, 55% of the people get a physical examination at ...

A factory manufacturing tennis balls determines that the probability that a single can of three b ...

random sample of 160 tires. Remember that “describe” means discuss center, spread, and shape. (b) What i ...

(a) the probability that you will get the third different prize on the next box you buy? (b) the ...

The correct answer is (c). If it is a binomial random variable, the probability of success, p , ...

On the TI-83/84, the solution is given by 1–binomcdf(48,0.025,1). We know that the sampling distr ...

83/84: normalcdf(0.7463,3.731) . (iii) Normal approximation to the binomial. The conditions for doing a no ...

tells us that its z -score is 1.28 [that’s InvNorm(0.9) on your calculator]. Hence, Solving, we have ...

On the TI-83/84, the solution is given by 1–binompdf(12,0.003,0). The clear message here is that even thou ...

Be sure to check that the sum of the probabilities is 1 (it is!). (a) Yes, it is a ran ...

CHAPTER 10 Binomial Distributions, Geometric Distributions, and Sampling Distributions If you roll a pair of ...

approximately normal. Random samples are selected from a large right-skewed population, and the sample mean ...

CHAPTER 11 Confidence Intervals and Introduction to Inference IN THIS CHAPTER Summary: In this chapter we begi ...

previously described a statistic as a value that describes a sample and a parameter as a value that ...

so using the sample mean to estimate the population mean is, on average, correct. But since we don’t kn ...