What is the p-value?

Q: In a sample of 226 Americans, the mean annual sugar consumption was 148 pounds with a standard…

A: The sampling distribution of a sample mean follows a normal distribution with the mean converging…

Q: A random group of 36 people in Toms River were asked “how much money did you spend at the grocery…

A: Given: Sample mean x¯=149.50 Sample size (n) = 36 Sample standard deviation (s) = 22.50 Confidence…

Q: Estimate the confidence interval for the mean number of times all University students eat fast…

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Q: In a survey, 31 people were asked how much they spent on their child's last birthday gift. The…

A: Sample size, n = 31Mean = 48Standard deviation = 8

Q: In a survey, 29 people were asked how much they spent on their child's last birthday gift. The…

A: Givensample size(n)=29mean(x¯)=47standard deviation(s)=2α=1-0.95=0.05α2=0.025Degrees of…

Q: In a service system at a bank, a sample of 40 customers is taken and the average waiting time is 12…

A: GivenMean(x)=12standard deviation(s)=2.4sample size(n)=40

Q: In a survey, 19 people were asked how much they spent on their child's last birthday gift. The…

A: It is given that, Mean = 35 Standard deviation = 9 Same size = 19

Q: In a survey, 11 people were asked how much they spent on their child's last birthday gift. The…

A: We have to find margin of error

Q: In a survey, 12 people were asked how much they spent on their child's last birthday gift. The…

A: We have given that,  Sample mean (x̄) = $ 34, standard deviation (s)= $ 5, sample size (n) = 12 and…

Q: In a survey, 26 people were asked how much they spent on their child's last birthday gift. The…

A:

Q: In a survey, 15 people were asked how much they spent on their child's last birthday gift. The…

A: Given: n=15,σ=$10,α=1-0.9=0.1

Q: The operations manager of a large production plant would like to estimate the average amount of time…

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Q: In a survey, 10 people were asked how much they spent on their child's last birthday gift. The…

A: Given data, n=10 x=35 s=4 c=99%

Q: The lead levels in a random sample of 35 crows in the region were measured and recorded. The mean…

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Q: In a survey, 26 people were asked how much they spent on their child's last birthday gift. The…

A:

Q: In a survey, 31 people were asked how much they spent on their child's last birthday gift. The…

A: Given: σ = $ 2  n = 31

Q: The operations manager of a large production plant would like to estimate the average amount of time…

A: Given information- Population standard deviation, σ = 7 minutes So, in seconds- Population standard…

Q: In a survey, 18 people were asked how much they spent on their child's last birthday gift. The…

A: Given  The results were roughly bell-shaped with a mean of $37 and standard deviation of $3 Sample…

Q: In a survey, 19 people were asked how much they spent on their child's last birthday gift. The…

A: From the given information, the sample mean is $49, the sample standard deviation is $3 and the…

Q: In a survey, 20 people were asked how much they spent on their child's last birthday gift. The…

A:

Q: A sample of 25 two-year-old chickens shows that they lay an average of 21 eggs per month. The…

A: Given, Sample size, n=25 mean, x =21 standard deviation, s=2   Formula for confidence interval( CI )…

Q: 2. In a recent study of 35 college students, the mean number of hours per week that they played…

A: According to the given information in this question  We need to find the 95% confidence interval

Q: In a survey, 22 people were asked how much they spent on their child's last birthday gift. The…

A: Solution: From the given information, confidence level is 0.80, σ=$10 and n=22.

Q: In a survey, 23 people were asked how much they spent on their child's last birthday gift. The…

A: Since population standard deviation is unknown, use t-distribution to find t-critical value. Find…

Q: In a survey, 15 people were asked how much they spent on their child's last birthday gift. The…

A: Solution: From the given information, S=2 and n=15. The confidence level is 0.98.

Q: In a survey, 16 people were asked how much they spent on their child's last birthday gift. The…

A:

Q: In a survey, 11 people were asked how much they spent on their child's last birthday gift. The…

A: The summary of statistics is,

Q: In a survey, 28 people were asked how much they spent on their child's last birthday gift. The…

A:

Q: In a survey, 30 people were asked how much they spent on their child's last birthday gift. The…

A:

Q: In a survey, 27 people were asked how much they spent on their child's last birthday gift. The…

A: The mean is $36 and the standard deviation is $6.

Q: A study of 25 graduates of four-year public colleges revealed the mean amount owed by a student in…

A: It is given that the mean amount owed by a student in student loans is $55,051. The sample standard…

Q: In a survey, 17 people were asked how much they spent on their child's last birthday gift. The…

A: Given that: Sample size=n=17 Sample mean=x¯=41Standard deviation=s=999% confidence level, i.e,…

Q: In a survey, 14 people were asked how much they spent on their child's last birthday gift. The…

A:

Q: In a survey, 30 people were asked how much they spent on their child's last birthday gift. The…

A: Given ,Sample size n = 30Sample mean x = 36Sample standard deviation (s0 =2d.F = n-1dF = 30-1 =…

Q: Construct a 90% confidence interval for the true average monthly salary earned by all employees of…

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Q: In a survey, 11 people were asked how much they spent on their child's last birthday gift. The…

A: Since population standard deviation is unknown, use t-distribution to find t-critical value. Find…

Q: In a survey, 29 people were asked how much they spent on their child's last birthday gift. The…

A: Given that, n=29 mean=$50 S.D=$8

Q: A sample of 14 commuters in Chicago showed the average of the commuting times was 33.2 minutes. If…

A: Given that x bar =33.2.s.d =8.3,n=14,alpha=.05

Q: In a survey, 26 people were asked how much they spent on their child's last birthday gift. The…

A: Given: n=25x¯=35s=2C.I.=99% Formula used: Since, here sample size is less than 30, t-distribution is…

Q: In a survey, 28 people were asked how much they spent on their child's last birthday gift. The…

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Q: A study by the department of education of a certain state was trying to determine the mean SAT…

A: Solution: Let X be the score. From the given information, x-bar=448, s=84 and n=56.

Q: A food snack manufacturer samples 15 bags of pretzels off the assembly line and weighed their…

A: Here, sample mean is x-bar = 10.2, the sample standard deviation is s = 0.25 and sample size n = 15.…

Q: A recent study of 28 randomly selected employees of a company showed that the mean of distance they…

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Q: In a survey, 18 people were asked how much they spent on their child's last birthday gift. The…

A: Mean = 34 Standard deviation = 3 Sample size, n = 18

Q: In a survey, 26 people were asked how much they spent on their child's last birthday gift. The…

A: Mean = 38 Standard deviation = 8 Sample size = 26 99% confidence level

Q: In a survey, 26 people were asked how much they spent on their child's last birthday gift. The…

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Q: In a survey, 21 people were asked how much they spent on their child's last birthday gift. The…

A: Obtain the margin of error at an 80% confidence level. The margin of error at an 80% confidence…

Q: In a survey, 20 people were asked how much they spent on their child's last birthday gift. The…

A:

Q: In a survey, 26 people were asked how much they spent on their child's last birthday gift. The…

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