
Student record revealed that the 16 out of a random sample of 64 of student with loans.It assumed that the current rate is persisting across all students.A sample of 100 students is selected from this cumpus. 1.calculate the probability that the number of the students with loans will be less...

"Two processes are used to produce forgings used in an aircraft wing assembly. Of 200 forgings selected form process1, 10 do not conform to the strength specs, whereas 300 forgings selected from process 2, 20 are nonconforming. a) Estimate the fraction nonconforming for each...

QUESTION is in the attach

Please see attachment there should be three attachment inside of zip folder

""Two processes are used to produce forgings used in an aircraft wing assembly. Of 200 forgings selected form process1, 10 do not conform to the strength specs, whereas 300 forgings selected from process 2, 20 are nonconforming. a) Estimate the fraction nonconforming...

Let us illustrate the idea of a sampling distribution in the case of a very small sample from a very small population. The population is the scores of 10 students on an exam: Student 0 1 2 3 4 5 6 7 8 9 Score 82 62 80 58 72 73 65 66 74 62 a. Use RAND function or StatTools to select 4...

Let x be a random variable representing the amount of sleep each adult in New York City got last night. Consider a sampling distribution of sample means x. As the sample size becomes increasingly large, what value will the mean x of the xdistribution approach? What value will the standard...

any progress when will I be able to review it? Appreciate your feed back

A researcher wishes to see if there is a difference in the cholesterol levels of two groups of men. A random sample of 30 men between the ages of 25 and 40 is selected and tested. The average level is 223. A second sample of 25 men between the ages of 41 and 56 is selected and tested. The...

The average price of a sample of 12 bottles of diet salad dressing taken from different stores is $1.43. The standard deviation is $0.09. The average price of a sample of 16 lowcalorie frozen desserts is $1.03. The standard deviation is $0.10. At = 0.01, is there a significant difference...
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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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