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i have a full test of 37 problems
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The mean number of days with 0.01 inch or more precipitation per month for Lewistown, Idaho, is about 8.7. Find the probability that in a given month a) there are exactly 9 days with 0.01 inch or more precipitation, b) there are at most 9 days with 0.01 inch or more precipitation, and c) there...
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61 randomly selected light bulbs were tested in a laboratory, 50 lasted more than 500 hours.find a point estimate of the true proportion of all light bulbs that last more then 500 hours.
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Cubicft Hours 545 24.00 400 13.50 562 26.25 540 25.00 220 9.00 344 20.00 569 22.00 340 11.25 900 50.00 285 12.00 865 38.75 831 40.00 344 19.50 360 18.00 750 28.00 650 27.00 415 21.00 275 15.00 557 25.00 1028 45.00 793 29.00 523 21.00 564 22.00 312 16.50 757 37.00 600...
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When should use a non-parametric test?
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A shipment of 150 flat screen TV s contain 3 defective units. Find the probability of receiving (a) no defective units (b) all defective units (c) at least one good unit. 3
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find the two standard scores z such that the middle 90% of a normal distribution is bounded by them.
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In a battleground state, 36% of all voters are Republicans. Assuming that there are only two parties - Democrat and Republican, if two voters are randomly selected for a telephone survey, what is the probability that they are both Republicans? Round your answer to 4 decimal places
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The regression equation relating attitude rating (x) and job performance (y) for ten randomly selected employees of a company is = 117 1.02x. Predict the job performance rating for an employee whose attitude rating is 55.
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A random sample of 42 college graduates who worked during their program revealed that a student spent an average 5.5 years on the job before being promoted. The sample standard deviation was 1.1 years. Using the 0.99 degree of confidence, what is the confidence interval for the population mean?...
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- 1. A school administrator wonders if students whose first language is not English score differently on the math portion of the sat exam than students whose first language is English. The mean SAT math score of students whose first language is english is 516 on the basis of data obtained from the college board. A simple random sample of 20 students whose first language is not English result in a sample mean SAT math score of 522. SAT math score are normally distributed with a population standard deviation of 114. Why is it necessary for SAT math scores to be normally distributed to test the hypothesis?
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