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Data to test the difference between two weighing methods for wheat deliveries gave a mean difference of 10 kg with a sample standard deviation of the difference of 20 kg, from a sample of size 50. What is the value of the test statistic? Give your answer to two decimal places.
question during the past 10 years minnesota pollution control agency has measured the concentration of chlorophyll-a
Find the minimum sample size needed, using a prior study that found that 19% of computers needed repairs or had problems by the time the product was three years old.
what is the probability of selecting a sample mean of 7 or less , with a sample population of 9 and mean of 10 and a standard deviation of 3.
the following table was presented in an article summarizing a study to compare a new drug to a standard drug and to a
Consumer products companies design different promotional activities to accomplish different goals. According to a spokesperson for General Mills, the company's cents-off coupon offers are designed to convince people to buy its products
What is the event corresponding to the above system failing during one period of operation and what is the event corresponding to the above system functioning properly during one period of operation?
In regression equation, the value of y-intercept indicates the value of Y when the value of X is zero.
question 1 there are 25 people in a room. what is the probability that at least two have the same birthday?question 2
In a survey of 500 randomly selected high school students, it was determined that 288 played organized sports. What is the probability that a randomly selected high school student plays organized sports?
A medical doctor wishes to test the claim that the standard deviation of the systolic blood pressure of deep sea divers is less than 450. To do so, she selected a random sample of 20 divers and found s = 432.
please write 50words on what the diagnosis is likely to be if a patient complains of one ankle and part of one foot
the life span of a battery is normally distributed with a mean of 2000 hours and a standard deviation of 30 hours.a
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