A major appliance manufacturer randomly sent a survey to 20 customers without replacement from total of...
Homework Answers
Answer: d) Hypergeometric
The hypergeometric distribution is used to calculate probabilities when sampling without replacement.
The probability mass function of hypergeometric distribution is given by:
where
K is the number of "successes" in the population
x is the number of "successes" in the sample
N is the size of the population
n is the number sampled
In this context,
K = number of customer reply to the survey out of a population
of 500= 25% of 500 = 125
x = number of customer reply in the sample of 20
N is the size of the population = 500
n is the number sampled = 20
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A major appliance manufacturer randomly sent a survey to 20
customers without replacement from total of...
A major appliance manufacturer randomly sent a survey to 20 customers without replacement from total of...
A major appliance manufacturer randomly sent a survey to 20 customers without replacement from total of 500 customers, the company knows that 25% of the customers will reply to the survey. What is the distribution of X that denote the number of customers who will reply?
A student randomly chooses four homework questions from a collection of twenty homework questions without replacement....
A student randomly chooses four homework questions from a collection of twenty homework questions without replacement. There are four categories of homework questions (five questions from each category). What type of probability distribution can be used to figure out the chance of the student choosing at least three homework questions of a specific type? hypergeometric distribution binomial distribution Poisson distribution all of the other responses (except for “none of the other responses”) none of the other responses
1. Customers who are registered on a corporate web site are summarized by the type of...
1. Customers who are registered on a corporate web site are summarized by the type of shipping contract they use and the number of orders in the previous month. The number of customers in each category are shown in the following table. Shipping Contract No orders One order More than one order 40 Total Express 25 65 Standard 15 45 20 80 Total 40 110 60 210 130 (a) If customers are selected at random without replacement, how many unique...
1. Customers who are registered on a corporate web site are summarized by the type of...
1. Customers who are registered on a corporate web site are summarized by the type of shipping contract they use and the number of orders in the previous month. The number of customers in each category are shown in the following table Shipping Contract No orders One order More than one order 40 Total Express 25 65 Standard 15 45 20 80 40 110 60 210 130 (a) If customers are selected at random without replacement, how many unique samples...
please solve all these questions 4 Customers who are registered on a corporate Web site are...
please solve all these questions
4 Customers who are registered on a corporate Web site are summarized by the type of shipping contract they use and the number of orders in the previous month. The number of customers in each category are shown in the following table Shipping Contract Express Standard No orders One order More than one order Total Total 25 15 40 65 44 109 44 20 64 134 79 213 Suppose that three customers are selected randomly,...
Students must show work to receive full credit. 1. Differentiate “Empirical Probability” and “Classical Probability”. 2....
Students must show work to receive full credit. 1. Differentiate “Empirical Probability” and “Classical Probability”. 2. Define “Independent Events”, “Mutually Exclusive Events”, and “Collectively Exhaustive Events”. 3. Suppose there are 15 red marbles and 5 blue marbles in a box. (3.a) If an individual randomly selects two marbles without replacement, what is the probability that both marbles are red? (3.b) If an individual randomly selects two marbles with replacement, what is the probability that both marbles are red? 4. Solve...
1. In practice, most studies involve relatively large populations for which taking a sample can p...
1. In practice, most studies involve relatively large
populations for which taking a sample can provide satisfactory
results much more quickly and at considerably lower cost than a
census.
a. True
b. False
2.Which of the following is not an example of primary data?
a. Data published by the New York Stock Exchange.
b. Financial data tapes that contain data compiled from the New
York Stock Exchange.
c. Data published by Statistics Canada.
d. Data published by the United States...
The distribution of ages of females in the United States is strongly skewed to the left with a mean of 80.2 years. A random sample of n 20 females is taken from this population and the mean ag...
The distribution of ages of females in the United States is strongly skewed to the left with a mean of 80.2 years. A random sample of n 20 females is taken from this population and the mean age of the sample is calculated. This is repeated 500 times. Which one of the following best describes the shape of the sampling distribution? 20. Cannot be determined because the standard deviation is unknown. Skewed to the left with a mean of (A)...
1. The access code for a car's security system consists of four digits. be zero and...
1. The access code for a car's security system consists of four digits. be zero and the last digit must be even. How many different codes are consists of four digits. The first digit cannot many different codes are available? 2. Decide whether each object is a permutation or a combination a) a telephone number b) a social security number c) a hand of cards in poker d) a committee of politicians e) the "combination" on a student gym locker...
n-Class Exercise 1 Instructions: Submit your work through Blackboard by the due date. Late submissions are...
n-Class Exercise 1 Instructions: Submit your work through Blackboard by the due date. Late submissions are not allowed. You can take photos of or scan your solutions Calculate or write the formulas for each test statistic and p-value for each hypothesis test question (questions 7-10). It is true you will never have to calculate these in real life, however, you should know what Megastat, or any other statistical software, is calculating. 1) According to an IRS study, it takes a...
1. Customers who are registered on a corporate web site are summarized by the type of shipping contract they use and the number of orders in the previous month. The number of customers in each category are shown in the following table. Shipping Contract No orders One order More than one order 40 Total Express 25 65 Standard 15 45 20 80 Total 40 110 60 210 130 (a) If customers are selected at random without replacement, how many unique...
1. Customers who are registered on a corporate web site are summarized by the type of shipping contract they use and the number of orders in the previous month. The number of customers in each category are shown in the following table Shipping Contract No orders One order More than one order 40 Total Express 25 65 Standard 15 45 20 80 40 110 60 210 130 (a) If customers are selected at random without replacement, how many unique samples...
please solve all these questions
4 Customers who are registered on a corporate Web site are summarized by the type of shipping contract they use and the number of orders in the previous month. The number of customers in each category are shown in the following table Shipping Contract Express Standard No orders One order More than one order Total Total 25 15 40 65 44 109 44 20 64 134 79 213 Suppose that three customers are selected randomly,...
1. In practice, most studies involve relatively large
populations for which taking a sample can provide satisfactory
results much more quickly and at considerably lower cost than a
census.
a. True
b. False
2.Which of the following is not an example of primary data?
a. Data published by the New York Stock Exchange.
b. Financial data tapes that contain data compiled from the New
York Stock Exchange.
c. Data published by Statistics Canada.
d. Data published by the United States...
The distribution of ages of females in the United States is strongly skewed to the left with a mean of 80.2 years. A random sample of n 20 females is taken from this population and the mean age of the sample is calculated. This is repeated 500 times. Which one of the following best describes the shape of the sampling distribution? 20. Cannot be determined because the standard deviation is unknown. Skewed to the left with a mean of (A)...
1. The access code for a car's security system consists of four digits. be zero and the last digit must be even. How many different codes are consists of four digits. The first digit cannot many different codes are available? 2. Decide whether each object is a permutation or a combination a) a telephone number b) a social security number c) a hand of cards in poker d) a committee of politicians e) the "combination" on a student gym locker...
n-Class Exercise 1 Instructions: Submit your work through Blackboard by the due date. Late submissions are not allowed. You can take photos of or scan your solutions Calculate or write the formulas for each test statistic and p-value for each hypothesis test question (questions 7-10). It is true you will never have to calculate these in real life, however, you should know what Megastat, or any other statistical software, is calculating. 1) According to an IRS study, it takes a...
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