Consider a population of five families with the following data representing the number of pets in each family.
Family Number of pets
A 2
B 6
C 4
D 3
E 1
How many possible samples of size 2 can be drawn?

Write each of the possible sample and then determine the mean of each sample.

Determine the mean and the standard deviation of the population.

For the distribution of sample mean values, provide the mean and the standard error of the mean.

Which graph represents the parent function of y=(x+2)(x-2)

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain