# Question

According to creditcard.com, 29% of adults do not own a credit card.

(b) What is the probability that in a random sample of 500 adults more than 30% do not own a credit card?

(c) What is the probability that in a random sample of 500 adults between 25% and 30% do not own a credit card?

(d) Would it be unusual for a random sample of 500 adults to result in 125 or fewer who do not own a credit card? Why?

(b) What is the probability that in a random sample of 500 adults more than 30% do not own a credit card?

(c) What is the probability that in a random sample of 500 adults between 25% and 30% do not own a credit card?

(d) Would it be unusual for a random sample of 500 adults to result in 125 or fewer who do not own a credit card? Why?

## Answer to relevant Questions

According to a study conducted by the Gallup organization, the proportion of Americans who are afraid to ﬂy is 0.10. A random sample of 1100 Americans results in 121 indicating that they are afraid to ﬂy. Explain why ...In this section, we assumed that the sample size was less than 5% of the size of the population. When sampling without replacement from a ﬁnite population in which n > 0.05N, the standard deviation of the distribution of ...In a survey of 35 adult Americans, it was found that the mean age (in years) that people would like to live to is 87.9 with a standard deviation of 15.5.An analysis of the raw data indicates the distribution is skewed ...A question on the 2006 General Social Survey was this: “How many family members do you know that are in prison?” The results of 499 respondents indicate that the mean number of family members in jail is 1.22, with a ...Construct a conﬁdence interval of the population proportion at the given level of conﬁdence. x = 30, n = 150, 90% conﬁdencePost your question

0