statistics

posted by .

According to a survey, only 15% of customers who visited the web site of a major retail store made a purchase. Random samples of size 50 are selected.



a) What proportion of the samples will have less than 15% of customers who will make a purchase after visiting the web site?

a)

______________



b) What proportion of the samples will have between 20% and 30% of customers who will make a purchase after visiting the web site?

b)

______________



c) The standard deviation of all the sample proportions of customers who will make a purchase after visiting the web site is ________.

c)

______________



d) The average of all the sample proportions of customers who will make a purchase after visiting the web site is ________.

d)

______________



e) 90% of the samples will have more than what percentage of customers who will make a purchase after visiting the web site?

e)

  • statistics -

    a.

  • statistics -

    ;;;

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics help

    The branch manager of an outlet (Store 1) of a nationwide chain of pet supply stores wants to study characteristics of her customers. In particular, she decides to focus on two variables: the amount of money spent by customers and …
  2. statistics

    The scores of students on the ACT college entrance examination in a recent year had a normal distribution with a mean of 18.6 and a standard deviation of 5.9. A simple random sample of 50 students who took the exam is selected for …
  3. Statistics

    Suppose x has a distributionwith u=72 and 0=8 if random samples of size n=16 are selected, can we say anything about the x distributin of sample means if the originalx distribution is normal can we say anything about the x distribution …
  4. Statistics

    According to a recent survey, 75% of all customers will return to the same grocery store. Suppose 8 customers are selected at random: A) What is the probability that exactly five of the customers will return?
  5. statistic

    A survey was made of 100 customers in a department store. 70 of the customers indicated they visited the store because of a newspaper advertisement. The remainder had not seen the ad. A total of 40 customers made purchases; of these …
  6. stats

    A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9. What is the probability that a randomly selected customer …
  7. statistics

    The Stop N’ Go convenience chain recently selected a random sample of 10 customers. The store monitored the number of times each customer made a purchase at the store over a two-month period. The following data were collected:
  8. statistics

    A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9. What is the probability that a randomly selected customer …
  9. statistics

    According to a survey, only 20% of customers who visited the web site of a major retail store made a purchase. Random samples of size 50 are selected.Tthe mean of all the sample proportions of customers who will make a purchase after …
  10. Math - Statistics

    The proportion of red M&M's made is 0.24. Suppose one took a random sample of 51 M&M's. (a) What is the probability that an SRS of 51 M&M's has as its proportion of red M&M's 0.23 or below?

More Similar Questions