From a random sample of 68 businesses, it is found that the mean time that employees spend on personal issues each week is 4.9 hours with a standard deviation of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues?

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Q: Hospital waiting room times are normally distributed with a mean of 38.12 minutes and a standard…

A: From the provided information, Mean (µ) = 38.12 minutes Standard deviation (σ) = 8.63 minutes X~N…

Q: Determine a 95% confidence interval for the mean, rounding all values to the nearest tenth.

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Q: In a test of the effectiveness of garlic for lowering cholesterol, 50 subjects were Next question…

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Q: The random sample is 100 students 16 to 22 years old. The mean of hours they sleep is 8.9 hrs and…

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Q: a)  A histogram of time spent eating and drinking each day is skewed right. Use this result to…

A: From given data we have : sample size n = 1072 mean x=1.35 standard deviation σ=0.53

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Q: Help!!

A: (a) Given: μ=374, σ=64, n=5 The corresponding z-value needed to be computed is: The probability…

Q: The mayor is interested in finding a 95% confidence interval for the mean number of pounds of trash…

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Q: people who had a certain subtype of influenza A at The General Hospital in the last month. For this…

A: Given that  Sample size n =100 Sample mean=8.6 Standard deviation =3.3

Q: According to the American Medical Association, the average annual of radiologists in the USA are…

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Q: The local Health Department conducted a study in 2009 of 900 adults asking each adult the number of…

A: Given Information: Sample size (n) = 900 Sample mean (x¯) = 7.946 Standard deviation = 6.567…

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.11 and a…

A: Given that the shoe sizes of American women have a bell-shaped distribution with a mean of 8.11 and…

Q: An investigator conducts a study to investigate whether there is a difference in mean PEF in…

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Q: Students took a college math placement exam with a mean of 200 and a standard deviation of 12. Using…

A: Given that, μ=200σ=12

Q: Females in a random sample have an average height of 63 inches with a standard deviation of 1.5…

A: Confidence interval: Confidence interval is an interval such that the probability of the unknown…

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A: Given Information: Sample size (n) = 241 Sample mean (x¯) = 2.3  Standard deviation (s) = 2.9 To…

Q: dnive-through has a lowe (a) What is the mean service time from the 734 customers? The mean service…

A: given     n=734 lower bound    =154.0 upper bound  =  157.8 the confidence intervals  are   (  x -…

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A: Given data,Mean μ=8.42sd    σ=1.52P(6.9<X<9.94)=?

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A: Givensample size(n)=100Mean(x)=357.60standard deviation(s)=1.40confidence level = 95%

Q: Construct a 90% Confidence Interval for the mean.

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A: Obtain the 99% confidence interval for the true average number of visitors per day to a fun work.…

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A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…

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Q: Commuting times for employees of a local company have a mean of 63.6 minutes and a standard…

A: Given, μ=63.6 minutesσ=3 minutes Let X denotes the commuting times for employees of a local company.…

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Q: An existing inventory for a test measuring self-esteem indicates that the scores have a standard…

A: Mean()=61standard deviation()=12sample size(n)=70confidence level=90%

Q: A food snack manufacturer samples 11 bags of pretzels off the assembly line and weighs their…

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Q: construct a 95% confidence interval for the mean number of years of secondary education for employed…

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Q: A popular weight loss program claims users will lose weight each month. Linda samples 25 dieters and…

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Q: company manufactures a certain over-the-counter drug. The company samples 80 pills and finds that…

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Q: Does this interval give the quality control inspector reason to believe that the mean amount of…

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A: Introduction: The sample mean and sample standard deviation are given here. Due to the large sample…

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103 and a standard deviation…

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