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scores on the sat verbal test are nd with a mean of 505 and std dev of 110a what percent of scores fall between 520 and
consider rolling two fair dice let a be the event that the sum of the two dice is 7 and b be the event that the first
assume the sat mathematics level 2 test scores are normally distributed with a mean of 500 and a standard deviation of
in a study designed to test the effectiveness of garlic for lowering cholesterol 49 adults were treated with garlic
1 rabbits like to eat the cucumbers in mimis garden there are 10 cucumbers in her garden which will be ready to harvest
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a senator wishes to estimate the proportion of the united states voters who favor abolishing the electoral college how
a survey showed that 80 of the 1600 adult respondents believe in global warming construct a 90 confidence interval
suppose you know that male height for adults is normally distributed with a mean of 70 inches and a std dev of 3
the calcium ca content of a powdered mineral substance was analyzed 10 times with the following percent compositions
a november 2008 gallup poll asked a sample of americans 18 years or older whether they would like to lose weight stay
a machine has three independent components the compoents are grouped together into two groups the first group contains
the heights in inches for a sample of male adults are62 82 79 76 73 70 67 64 61 80 79 75 72 69 71 71 71 74 74 74 draw
1 in a study designed to test the effectiveness of garlic for lowering cholesterol 49 adults were treated with garlic
a school is studying their students test scores by grade explain how the characteristic grade could be considered
i problemtomato plants were grown in a greenhouse under treatments consisting of combinations of soil type factor a and
suppose you believe that two variables x and y are related but you have no idea which way the causality goesdoes x
an economist found that a random sample of 42 high school teachers had an average annual salary of 56490 a previous
in a random sample of 200 high school students in a city 120 said that they are very concerned about the cost of
conduct the single factor anova test table not neededlionel is a waiter at a local diner he notices that he seems to
suppose you want to predict reading speed using among other variables the device the person is reading from this device
explain the benefits of using natural logarithms of variables either of y or of the xs as opposed to other possible