(b) The delivery times for all food orders at a fast-food restaurant during the lunch hour are normally distributed with a mean of 6.7 minutes and a standard deviation of 2.1 minutes. Let i be the mean delivery time for a random sample of 16 orders at this restaurant. Calculate the mean and standard deviation of i and describe the shape of its sampling distribution.

Q: The distribution of grades in a final exam conforms to the normal distribution with an average of 60…

A:

Q: What percentage of students from this school earn scores that satisfy the admission requirement?…

A: It is given thatMean, μ = 1490Standard deviation, σ = 296Z-Score, Z = ( X - μ )/σwhere, Z be the…

Q: At 5% level of significance, what can you conclude about the average highest recorded wind speed…

A:

Q: he distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Given data,μ=35σ=12P(11<X<35)=?

Q: According to the American Automobile Association, the average cost of a gallon of regular unleaded…

A:

Q: The average age of AMA employees is 34 years old. Assume the data is normally distributed. If the…

A: Given that, μ=34 yearsσ= 3 years The probability that the age of a randomly selected AMA employees…

Q: Find the mean and standard deviation of the indicated sampling distribution of sample means. Then…

A: Sample size=25

Q: tal of 82 Grade 11 students of ABC senior high school took the 60 item test in General mathematics.…

A: To find the normal distribution with the mean 42 and standard deviation 6

Q: Find the mean variance and standard deviation for the number of heads when 10 coins are tossed.

A: When a coin is tossed it can it can land either head or tail. Therefore, the number of outcomes is…

Q: The mean cost of a set of new set of Queen sheets having a 500 thread count is $65.40 with a…

A: We have given that, Population mean (µ) = $65.40, standard deviation (σ) = $7.41 sample size (n) =…

Q: the mean of a random sample of size n= 25 is used to estimate the mean of an entire population that…

A:

Q: A biologist studies the gestation period of wolves. Past data reveals that such gestation periods…

A: Obtain the mean of the sampling distribution of sample mean for a sample of size 15. The mean of the…

Q: The mean mass of 500 kudu at a private game park is 151 kg and the standard deviation is 15kg.…

A:

Q: Suppose that a sample of size 52 is drawn from a population with mean 23 and standard deviation 39 .…

A: Mean = 23 Standard deviation = 39 Sample size, n = 52