Jonathan Kent tests a new type of chicken feed on 9 chickens. Their average weight is 64.38 ounces, with a standard deviation of 2.065 ounces. He finds a 95% confidence interval for the mean weight of all chickens which could be given the new feed is (62.79, 65.97) ounces.

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: average breaking strength is 50 kN, with a standard deviation of 2 kN. Find a 95% confidence…

A:

Q: You measure 42 dogs' weights, and find they have a mean weight of 42 ounces. Assume the population…

A:

Q: For a random sample of 55 overweight men, the mean of the number of pounds that they were overweight…

A: It is given that the sample mean is 32 and the population standard deviation is 4.1.

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: A sample of 22 households uses an average of 346.2 gallons of water per day, with a sample standard…

A: The sample size is 22, sample mean is 346.2 and sample standard deviation is 50.5.

Q: For a random sample of 55 overweight men, the mean of the number of pounds that they were overweight…

A: Given,sample size(n)=55sample mean(x)=32standard deviation(σ)=4.1α=1-0.90=0.1α2=0.05z0.05 =1.645

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: The average weight of 36 randomly selected school buses was 4150 pounds with a standard deviation of…

A: Given data,x=4150σ=480n=36z-value at 99% confidence is Zc=2.576

Q: 15. A random sample of 100 visitors to a popular theme park spent an average of $142 on the trip…

A: SOLUTION: Given average x=142          standard deviation σ=47.5          random sample n=100

Q: A while ago, I asked n=44 of my students in a stats class to estimate the number of pages in a book…

A:

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: You measure 30 watermelons' weights, and find they have a mean weight of 34 ounces. Assume the…

A: Sample mean = x̅ = 34 Sample size = n = 30 Population S.D = σ = 11.3

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: How much do wild mountain lions weigh? Six adult wild mountain lions are captured and released.…

A: Given data , 68, 104, 128, 122, 60, and 64.

Q: A sample of 15 car owners showed that their average repair bill was $300 with a standard deviation…

A: It is given that sample mean is $300 and standard deviation is $32.

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

A: Sample size : n=14 Sample mean : x¯=33.2 Sample standard deviation : s=8.3 Confidence level :…

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

A:

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…

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

A: Solution:Given information:

Q: Twelve dieters lost an average of 7.1 pounds in 6 weeks when given a special diet plus a  herbal…

A: Given,To, construct a 95% confidence interval for the difference of the means.

Q: nstruct a 99% confidence interval for the population mean distance driven per year. A claim is made…

A: As the population standard deviation is not known,  we will use t Distribution. The number of…

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

A: Let  be the population mean of water per day.Given that,Sample size Sample mean Sample standard…

Q: You measure 48 backpacks' weights, and find they have a mean weight of 72 ounces. Assume the…

A:

Q: Construct a 99% confidence interval for the true average number of visitors per day to a fun park,…

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

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

A:

Q: At eight different locations, paint used to mark crosswalks deteriorated after being driven over by…

A: Solution: Let X be the number of cars that would cause deterioration. From the given information,…

Q: We have developed a series of questions to measure job satisfaction of bus drivers in London,…

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: A professor wants to estimate how many hours per week her student study. A simple random sample of…

A:

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

A:

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

A: We have given that,  Sample mean (x̄) = 10 pounds, standard deviation (s) = 2 pounds and sample size…

Q: For a random sample of  70  overweight men, the mean of the number of pounds that they were…

A: Here, n = 70, CL = 0.99, x=28, and σ=3.8

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

A: We have given that  Sample size n = 80 Sample mean = 325.5 Standard deviation s=10.3 90%confidence…

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: Suppose that a garage samples 20 customers. They find the average time for there oil change is 4,227…

A: The objective of this question is to find the lower bound of the 90% confidence interval for the…

Q: A teacher gives a test to his class of 25 students. Since he wants to quickly obtain an estimate of…

A: The class of 25 students is considered as the population. Sample size n =12 Sample mean x¯=82 Sample…

Q: Sales personnel for City Distributors Inc. submit weekly reports listing the customer complaints…

A: Given Information: Sample size (n) = 8 Sample mean (x¯) = 8 Sample standard deviation (s) = 3.464 To…