In a survey, 20 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $36 and standard deviation of $11. Construct a confidence interval at a 98% confidence level. Give your answers to one decimal place.

Q: 48 people were asked how much they would be willing to spend on a pair of socks. The results were…

A: As the population standard deviation is unknown, use t distribution. Given: Xˉ=43 s=7 n=48 The…

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

A: Given that : n=16 Standard deviation =$13 Mean = $49 We have to calculate 99% Confidence level :

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

A: Solution:

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

A:

Q: na survey, 25 people were asked how much they spent on their child's last birthday gift. The results…

A: Given data,

Q: In a survey, 10 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)=6 and sample size (n) = 10 Then,…

Q: In a survey, 24 people were asked how much they spent on their child's last birthday gift. The…

A: It is given that  Sample mean = 49.3 Sample standard deviation, s = 11 Sample size, n = 24…

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

A:

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

A: Given The value of n is 18. The value of s is 18. The value of x=39. The confidence level is 90%.

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

A: The random variable X is the amount people spent on their child's last birthday gift The sample size…

Q: confidence interval

A:

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

A:

Q: interval at a 95% confidence level. Give your answers to one decimal place. Interpret your…

A: Given : Sample Size, n = 18 Sample Mean, x̄ = 35 sample standard…

Q: people were asked how much they spent on their child's last birthday gift. The results were roughly…

A: given data, n=27bell shaped distributionX¯=48S=20CI=0.98α=1-0.98=0.02

Q: A survey of 26 individuals found that they spent an average of $39.21 on exercise attire for the…

A: Confidence interval is an inference process which is used to estimate the population parameter. The…

Q: In a survey, 32 people were asked how much they spent on their child's last birthday gift. The…

A: Given  sample size n=32 mean x¯=$33 standard deviation s=$12 confidence level =80%,…

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

A:

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

A: Using excel formula “=T.INV(1-(0.2/2),22)”, the critical value of 80% confidence level is 1.321.

Q: In a survey, 24 people were asked how much they spent on their child's last birthday gift. The…

A: From the available information, Sample size, n =24 Sample mean, x = 31 Sample standard deviation, s…

Q: In a survey, 25 people were asked how much they spent on their child's last birthday gift. The…

A:

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

A: A confidence interval is an interval that is used to estimate the unknown parameter. The lowest…

Q: In a survey, 25 people were asked how much they spent on their child's last birthday gift. The…

A:

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

A:

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

A: Sample mean = x̅ = 46 Sample size = n = 23 Sample S.D = s = 12 Standard Error = s/√n  = 12/√23…

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

A: The sample mean is 32 and standard deviation is 14.

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

A: See the handwritten solution

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

A: Givensample size(n)=20Mean(x)=50standard deviation(s)=19c=90%

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

A: Given: Sample size = 12 Sample mean  = $45 Sample standard deviation = $8 To find: Margin of error…

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

A: Solution: Given information: n= 29 Sample size x= $36  Sample mean s= $18  Sample standard deviation…

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

A: It is given that n=22, x=34 and s=5. At 98% confidence level, the value of z is 2.326.