and a popuaton standard deviation of $2 Construct a 90% confidence interval for the average amount spent on lunch by all customers. Please show the answer to 2 decimal places. A 90% confidence interval for the average amount spent on lunch by all customers is

Q: You measure 40 watermelons' weights, and find they have a mean weight of 76 ounces. Assume the…

A:

Q: You measure 20 backpacks' weights, and find they have a mean weight of 76 ounces. Assume the…

A: sample size (n)=20Mean ()=76standard deviation ()=9.6confidence level=99%

Q: population mean turtle weight. r answers as decimals, to two places ounces

A: Since population standard deviation is known, the critical value at 99% confidence value will be…

Q: A researcher wants to estimate the mean blood cholesterol level of young men ages 15-25 with an…

A: Given information- Population standard deviation, σ = 50 mg/dl Confidence interval = 0.8206…

Q: You measure 23 turtles' weights, and find they have a mean weight of 71 ounces. Assume the popula…

A: Given that  Sample size n =23 Sample mean =71 Population standard deviation =11.3

Q: Aisha wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She…

A:

Q: You measure 25 turtles' weights, and find they have a mean weight of 45 ounces. Assume the…

A: The random variable turtle’s weight follows normal distribution. The sample size is 25. The sample…

Q: You measure 41 watermelons' weights, and find they have a mean weight of 65 ounces. Assume the…

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

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: We have given the lower bound 19 Upper bound is 23

Q: A research found that 70% of 1500 randomly selected U.S. adults believe in global warming. Find the…

A: Solution: From the given information, p-hat=0.70 and n=1500.

Q: You measure 43 backpacks' weights, and find they have a mean weight of 72 ounces. Assume the…

A: We have given that, Sample mean (x̄) = 72, population standard deviation (σ) = 11.7 and sample size…

Q: The data for an independent –measures research study produced a sample mean difference of 6 points…

A: Following information is given:

Q: You measure 35 backpacks' weights, and find they have a mean weight of 64 ounces. Assume the…

A: Mean weight =64 ouncesStandard deviation=4 ounces99% confidence interval i.e. 1% level of…

Q: You measure 21 dogs' weights, and find they have a mean weight of 37 ounces. Assume the population…

A:

Q: Michelle takes a sample of 25 different-gender married couples. In her sample, she found that the…

A:

Q: You measure 49 backpacks' weights, and find they have a mean weight of 69 ounces. Assume the…

A: Solution:Given information:

Q: We would like to construct a 90% confidence interval for the mean, based on a sample of 35…

A: Given data,Sample size n=35sample mean x=11sample sd is s=3.2Construct a 90% CI?

Q: A random sample of 100 employees at a company shows that 62 are female.  Form a 95% confidence…

A:

Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: The following information has been provided: The confidence level is 95%. The margin of Error is…

Q: You measure 41 backpacks' weights, and find they have a mean weight of 50 ounces. Assume the…

A: Since we know population standard deviation, Use z-distribution to find z-critical value. Find…

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

A: From the provided information, Sample size (n) = 18 Sample mean (x̄) = 35.40 Standard deviation (s)…

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

A:

Q: You measure 45 turtles' weights, and find they have a mean weight of 62 ounces. Assume the…

A:

Q: You measure 44 dogs' weights, and find they have a mean weight of 80 ounces. Assume the population…

A: You measure 44 dogs' weights, and find they have a mean weight of 80 ounces. Assume the population…

Q: A researcher wants to estimate the mean blood cholesterol level of young men ages 15-25 with a 90.1%…

A:

Q: You measure 30 backpacks' weights, and find they have a mean weight of 78 ounces. Assume the…

A:

Q: You measure 48 backpacks' weights, and find they have a mean weight of 71 ounces. Assume the…

A:

Q: Determine the point estimate of the population mean and margin of error for the confidence interval.…

A: Lower bound=15, Upper bound=27

Q: You measure 37 watermelons' weights, and find they ha population standard deviation is 10 ounces.…

A: Given: n = 37 x=51σ=10 The value of z at 95% confidence level is 1.96, which can be obtained by…

Q: You measure 39 turtles' weights, and find they have a mean weight of 30 ounces. Assume the…

A: The mean is 30 and the population standard deviation is 7.8.

Q: Estimate and report the number of meals you eat out per week. Assume the standard deviation is known…

A: The number of meals eaten by 10 individuals of a class are reported as follows: Individual No. of…

Q: A researcher collected sample data for 9 women ages 18 to 24. The sample had a mean serum…

A: Solution: Let X be the serum cholesterol level of all women in the age group 18 to 24. From the…

Q: The confidence interval for a population mean is (7.32, 7.52). What are the sample mean and the…

A: given data, the confidence interval for a population mean is (7.32,7.52)sample mean and margin of…

Q: You measure 35 backpacks' weights, and find they have a mean weight of 64 ounces. Assume the…

A: n = 35x¯ = 64σ = 499% ci for μ = ?

Q: Exam 2 Math 200 Fall 2019-03 7. A random sample of 31 people in a nursing home had a mean systolic…

A: We have to create 90% confidence interval.