A sample of 15 hospitals in Texas had a mean wait time of 48 minutes. Texas hospitals, as a whole, have a mean wait time of 53 minutes. Which of the following accurately describes this information?(1 point)
Responses
μ=48 minutes and μ=53 minutes
mu equals 48 minutes and mu equals 53 minutes
μ=48 minutes and x¯¯¯=53 minutes
mu equals 48 minutes and Modifying above x with bar equals 53 minutes
x¯¯¯=48 minutes and x¯¯¯=53 minutes
Modifying above x with bar equals 48 minutes and Modifying above x with bar equals 53 minutes
x¯¯¯=48 minutes and μ=53 minutes
Modifying above x with bar equals 48 minutes and μ=53 minutes
The age, in years, of 10 randomly selected passengers on a flight from Houston to New Orleans were recorded as {23,48,52,34,22,53,19,23,32,27} . Calculate the sample mean age to the nearest integer.(1 point)
Responses
31 years
31 years
333 years
333 years
33 years
33 years
34 years
33 years
Differentiate between the following scenarios. Which scenario is an example of a statistic?(1 point)
Responses
Every worker at the local arcade was asked how many hours they spend listening to music in a day. The mean number of hours was 5.
Every worker at the local arcade was asked how many hours they spend listening to music in a day. The mean number of hours was 5.
The temperature of every person who walked into a local clinic was recorded. The mean temperature was 98.7°F.
The temperature of every person who walked into a local clinic was recorded. The mean temperature was 98.7 degrees F.
All the lions at the local zoo were monitored to see how many hours they slept in a day. The mean number was 4.
All the lions at the local zoo were monitored to see how many hours they slept in a day. The mean number was 4.
Thirty students were randomly selected from Mrs. Calzada’s group of 158 students. They were asked how many hours they spend watching TV every day. The mean number of hours was 2.
Question
Which of the following samples will have the mean closest to the population mean?(1 point)
Responses
a sample with a standard deviation of 53 and a sample size of 25
a sample with a standard deviation of 53 and a sample size of 25
a sample with a standard deviation of 12 and a sample size of 8
a sample with a standard deviation of 12 and a sample size of 8
a sample with a standard deviation of 24 and a sample size of 12
a sample with a standard deviation of 24 and a sample size of 12
a sample with a standard deviation of 14 and a sample size of 6.2
a sample with a standard deviation of 12 and a sample size of 8
What refers to the process of selecting items from a population in order to estimate the characteristics of the whole population?(1 point)
Responses
sampling
sampling
range
range
mode
mode
mean