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neusa88:
Group Title
In a study of the effect of a medical treatment, a simple random sample of 300 of the 500 participating patients was assigned to the treatme…
 updated 11 months ago
 1 reply
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Mathematics

neusa88:
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A multiple choice test consists of 100 questions. Each question has 5 possible answers, only one of which is correct. Four points are awarde…
 updated 2 months ago
 3 replies
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Mathematics

neusa88:
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The durations of phone calls taken by the receptionist at an office are like draws made at random with replacement from a list that has an a…
 updated one year ago
 2 replies
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Mathematics

neusa88:
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multiple choice question has 5 available options, only 1 of which is correct. Students are allowed 2 attempts at the answer. A student who d…
 updated one year ago
 2 replies
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Mathematics

neusa88:
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In an egg carton there are 12 eggs, of which 9 are hardboiled and 3 are raw. Six of the eggs are chosen at random to take to a picnic (yes,…
 updated one year ago
 3 replies
 1 Medal
Mathematics

neusa88:
Group Title
In an egg carton there are 12 eggs, of which 9 are hardboiled and 3 are raw. Six of the eggs are chosen at random to take to a picnic (yes,…
 updated one year ago
 No Medals Yet
Mathematics

neusa88:
Group Title
A quiz consists of 20 truefalse questions. The score for each question is 1 point if it is answered correctly, and 0 otherwise.
1. Suppos…
 updated one year ago
 3 replies
 1 Medal
Mathematics

neusa88:
Group Title
A quiz consists of 20 truefalse questions. The score for each question is 1 point if it is answered correctly, and 0 otherwise.
1. Suppos…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

neusa88:
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A random number generator draws at random with replacement from the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Find the chance that the digit 5 ap…
 updated one year ago
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Mathematics

neusa88:
Group Title
A school is running a raffle. There are 100 tickets, of which 3 are winners. You can assume that tickets are sold by drawing at random witho…
 updated one year ago
 4 replies
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Mathematics

neusa88:
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If you bet on “red” at roulette, you have chance 18/38 of winning. (There will be more on roulette later in the course; for now, just treat …
 updated one year ago
 3 replies
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Mathematics

neusa88:
Group Title
Can you help me with this problem, thanks
Weights of male mountain lions follow the normal distribution with a median of 150 lb and an int…
 updated one year ago
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Mathematics

neusa88:
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Can you help me with this problem, thanks
Weights of male mountain lions follow the normal distribution with a median of 150 lb and an int…
 updated one year ago
 1 reply
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Mathematics

neusa88:
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The highest point in the scatter is the point for Illinois, at 1807. The two just below it, at 1778 and 1777, are for Minnesota and Iowa. Th…
 updated one year ago
 24 replies
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Mathematics

neusa88:
Group Title
Consider all the married couples in the world. Which of the following do you think is true regarding the association between wife’s age and …
 updated one year ago
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Mathematics

neusa88:
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quiz consists of 10 multiple choice questions. Each question is marked either “right” or “wrong.” Each right answer gets 5 points, and 1 po…
 updated one year ago
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Mathematics

neusa88:
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The eggs of a species of bird have an average diameter of 23 mm and an SD of 0.45 mm. The weights of the chicks that hatch from these eggs h…
 updated one year ago
 3 replies
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Mathematics

neusa88:
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The birthweights and lengths of newborns at a hospital have an upward sloping football shaped scatter diagram. For a baby on the 35th percen…
 updated one year ago
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Mathematics

neusa88:
Group Title
The table below shows the distribution of the time they spent watching TV . Intervals include the left endpoint but not the right. You can a…
 updated one year ago
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Mathematics

neusa88:
Group Title
The table below shows the distribution of the time they spent watching TV in the week before the survey. Intervals include the left endpoint…
 updated one year ago
 3 replies
 1 Medal
Mathematics

neusa88:
Group Title
A computer program is designed to convert lists of numbers into standard units. The program is used on a list of 100 numbers. A statistician…
 updated one year ago
 3 replies
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Mathematics

neusa88:
Group Title
A computer program is designed to convert lists of numbers into standard units. The program is used on a list of 100 numbers. A statistician…
 updated one year ago
 2 replies
 1 Medal
Mathematics

neusa88:
Group Title
The lengths of the eggs of a species of bird are roughly normally distributed, with a mean of 32 mm and an SD of 1.2 mm.Approximately what i…
 updated one year ago
 7 replies
 1 Medal
Mathematics