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A Tamiami shearing machine is producing 10 percent defective pieces, which is abnormally high. The quality control engineer has been checking the output by almost continuous sampling since the abnormal condition began. What is the probability that in a sample of 10 pieces:
a. Exactly 5 will be defective?
b. 5 or more will be defective?
Suppose you toss a die 100 times in a row. What is the probability that you see 4 spots between 10 and 20 times?
A company has random drug test employee numbers range from 1 to6296. Find probability of selecting number less than 1000 and selecting a number divisible by 1000.
Suppose an airport scanning device has 98% accuracy in detecting certain kinds of metal objects (98% of people carrying these objects are correctly identified as carriers and 98% of people not carrying them are correctly identified as non-carriers..
Cholesterol levels are measured as followed: 185 225 240 196 175 180 194 147 223. Generate a 95% confidence interval for the true mean total cholesterol levels in children?
Suppose you want to estimate the sample size for a multiple correlation analysis. There are five predictors in your study.
Compute a 95% confidence interval for the population mean, based on the sample 25, 27, 23, 24, 25, 24 and 59. Change the number from 59 to 24 and recalculate the confidence interval.
A new machine has just been installed to cut and rough-shape large slugs. The slugs are then transferred to a precision grinder. One of the critical measurements is the outside diameter.
A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selected a distribution, what value will be exceeded 10% of the time?
What is the value of sample mean? If the interval represents 90 % confidence interval, what would the 99 % confidence interval be?
Is there evidence to suggest that the process average differs from the target value?
The number of mathematics texts actually chosen, construct a table showing the values of the joint probability distribution of x and y.
can we conclude that women think men are less kind, gentle, and thoughtful in the later survey compared with the earlier one? Hint: For the calculations, assume the latter survey as the first sample.
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