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In your own words explain the difference between "descriptive statistics" and "inferential statistics." Do not just give definitions.# In your own words, define the four different sampling techniques.# Develop your own hypothesis about a situation of interest, for example: "Middle income families containing four members spend 10% of their gross income on clothing per year."# Select one of the four sampling techniques and give a detailed design of how you would gather sampling data to answer your hypothesis.# Select a second sampling technique for the same hypothesis and give a second detailed design of how you would gather sampling data.
A hospital human resources manager finds that the local average starting salary for nurses is $24,000. She randomly samples 10 nurse's salaries at the hospital and calculates a mean of $23,450 and a standard deviation of $400.
Observations was x ¯ = 119.8 (actually 119.7692), and the 14th observation, somewhat of an outlier, was 158. What is the value of x ¯ for the entire sample?
The profit for product 1 is $6 per unit, and the profit for product 2 is $4 per unit. Solve this model by using graphical analysis.
Assume that a hand of 12 cards is dealt from a normal deck of 52 playing cards. What is the probability that of the 12 cards, 3 will be diamonds, 3 will be clubs, 3 will be spades, and 3 will be hearts.
What is the probability that a shopper will spend more than 25 minutes in a store? If 200 shoppers enter a store, how many shoppers would you expect to stay in the store for more than 25 minutes?
Choose at random 4 of those under 21 to interview about attitudes toward alcohol. You have given every student the same chance to be interviewed. What is that chance?
An assembly line turns out 10% deffectives. Determine an acceptance number and sampling plan for samples of size 14 and a producers risk of 3%. (AQL = 10)).
A roulette wheel has 38 slots, numbered 0, 00, and 1 to 36. The slots 0 and 00 are colored green, 18 of the others are red, and 18 are black.
The following data set shows the ages of the first 7 presidents and the 7 most recent presidents including President Obama. Find the mean, median, and range for each of the two data sets.
The random variable X, representing the number of accidents in a certain intersection in a week, has the following probability distribution
There are three types of bread, three types of meat, three types of cheese, and four types of topping. How many different sandwiches can the restaurant make?
Confirm whether given random variable is binomial distribution or not. If this experiment is finished with replacement, explain why.
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