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The first card selected from a standard 52-card deck is a king.
a. If it is returned to the deck, what is the probability that a king will be drawn on the second selection?
b. If the king is not replaced, what is the probability that a king will be drawn on the second selection?
c. What is the probability that a king will be selected on the first draw from the deck and another king on the second draw (assuming that the first king was not replaced)?
The standard deviation of the sample was computed to be 2.1 calls. At the .05 level of significance, can we conclude that more than 40 calls are made on the average in a week?
Ffinding that the mean sodium content is 324 mg, with a standard deviation of 35 mg. Find a 95 % confidence interval for the mean sodium content of this brand of hotdog.
You have picked out the carton of 1 dozen eggs (that's 12 eggs) at grocery store. Find out the probability that at most two of eggs in carton are cracked.
nine different colored flags are available to place on a pole one beneath another. the arrangement of the colors
two non-repeating letters and two numbers will be used to form an identification badge. the letters are a through k and
a specific automotive part that a service station stocks in its inventory has an 8 chance of being defective. suppose
Do the data provide sufficient evidence to conclude that the cream will improve the skin of more than 50% of women? Test using α=0.05 and the p-value method.
a national study has determined that people who work full time average 43.4 hours worked per week. assume that the
What is the 25th percentile of a X² distribution with 20 degrees of freedom? What symbol is used to denote this value?
in a normal distribution find the probability expressed as a percentage that is greater than a z score of
A survey found that the variance of the rental rates on 8 cars at the airport was 35.7 while the variance of the rental rates on 5 cars down town was 50.4. What test value should be used in a F test?
What is the minimum sample size you should use to assure that your estimate of will be within the required margin of error around the population p?
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