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The inspector correctly identified defective products 90% of the time. For the next 10 products, what is the probability that he makes fewer than 2 incorrect inspections?
Employees of a local company are classified according to gender and job type. The followoing table summarizes the number of people in each category.
Male FemaleAdmin 110 10salaried 30 50hourly 60 40
If an employee is selected at random, what is the probablity that the employee is female or works as a member of admin?
In 2001, the US Department of Labor reported the average hourly earnings for US production workers to be $14.32 per hour. A sample of 75 production workers during 2003 showed a sample mean of $14.68 per hour.
Find out the upper and lower bounds on average life expectancy of the Canadian women such that at least 90% of all population is included.
A random sample has been taken from a normal distribution and the following confidence intervals constructed using the same data: (38.02, 61.98) and (39.95, 60.05). What is the value of the sample mean?
Normal adult Mean Temperature is 98.2 and standard deviant is 0.62 with normal distribution. If 16 people are randomly selected determine the probability that their mean body temp is below 98.5 degrees.
Do the data in the sample represented in the Excel file support his contention at the .05 level of significance?
Two letters are chosen at random without replacement from word statistical. Determine the probability that both letters are s?
Determine the event that the sum of the numbers falling uppermost is less than or equal to 7
A study was recently done in which 500 people were asked to point out their choices for one of three products. Following table illustrates the breakdown of responses by gender of the respondents.
Two independent samples of sizes n1 = 50 and n2 = 50 are randomly selected from two populations to test the difference between the population means. The sampling distribution of the sample mean difference, is:
A government survey conducted to estimate the mean price of houses in a metropolitan area is designed to have a margin of error of $10,000.
Construct a 95% confidence interval estimate for the population proportion of airline travelers who think that the airline fee that is most unreasonable is additional charges to redeem point/miles.
Do women talk more than men? Equip male and female students with a small device that secretly records sound for arandom 30 seconds during each 12.5 minute interval for two days.
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