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The following games are played with 8 cards: the four kings and the four aces. The dealer fans the cards with their back to you and asks you to take one, but not to look at it. He tells you that you will win a prize if your chosen card is an ace. There are two versions of what happens next.
(a) In version 1, he closes up the remaining 7 cards, shuffles them and deals the top card face up on the table, and it is seen to be the king of spades. He then deals the next card face down on the table. He then offers you the chance to trade the card you hold for the face-down card that was just dealt. So you have two choices: stay or switch. What are your chances of winning under each choice?
(b) In version 2, he announces that he is going to select a king from the remaining 7 cards, and he selects the king of spades and lays it face up on the table. He then shuffles the remaining six cards and deals the top card face down on the table, and offers you the chance to trade the card you hold for this new card. So you again have two choices: stay or switch. What are your chances of winning under each choice?
Using your result obtained in g, derive for each sample in your population of samples (cf., result obtained in d) a 90% confidence interval.
The following data represent scores of 50 students in the applied business statistics test. Prepare the frequency distribution table and the frequency histogram for this data set.
1. a new diagnostic test has been developed to diagnose disease y. the new test was compared to the standard diagnostic
a researcher is comparing 6 groups to test if they have the same means. there are 62 data values altogether. the
a car manufacturer is concerned about poor customer satisfaction at one of its dealerships. the management decides to
a sample of n 7 scores has a mean of m 9. one score in the sample is changed from x 19 to x 5. what is the value
kyle averages 5 finished accounts per day. his standard deviation is 1 account per day and we want to know how many accounts he has to finish in a day to be at his 79.95 percentile
according the international atomic energy agency electricity per-capita consumption in canada is 16939 kwh in 2002. a
a sample of 55 night-school students ages is obtained in order to estimate the mean age of night-school students. x 25
Ms Moline is the budget director for Nexus Media Inc. She is comparing travel costs for sales and the audit staff. She collected the following sample data:
Use these data to test whether there are any significant differences among the three age groups. Use α = .05. SSbetween= ? T2/n - G2/N = 152/3 + 122/3 + 32/3 - 302/9
1.a sample of 50 male and 50 female infants were put on an experimental infant formula. after two weeks the parents of
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