Statistics > SOPHIA Milestone > MAT 300 Unit 2 Milestone Exam Answer Sophia | several sets (All)
1 A fast-food restaurant gave a “Customer Satisfaction Survey” in which 1500 customers rated how satisfied they were with service. The results are shown below as a table. Rating Frequency Extr... emely Satisfied 234 Satisfied 443 Neutral 246 Dissatisfied 203 Extremely Dissatisfied 374 The relative frequency of people who were dissatisfied with the service is __________. 13.5% 29.5% 20.3% 38.5% 2 The formula for the standard deviation of a sample is: Select the true statement for the following data set that has a mean of 8: 4, 6, 6, 6, 9, 9, 12, 12 Answer choices are rounded to the hundredths place. The variance is 2.98 and the standard deviation is 8.86. The variance is 8.86 and the standard deviation is 7.50. The variance is 8.86 and the standard deviation is 2.98. The variance is 7.50 and the standard deviation is 2.98. 3 Let x stand for the number of minutes spent waiting in line for a rollercoaster at an amusement park. 81 people are sampled at a time. The sample mean is 18 minutes and the sample standard deviation is 0.5 minutes. What is the standard deviation of the population? 18 4.5 0.5 2 4 Mike's electronics store sold the following number of cellphones on each of the seven days of a week. Day Cell Phones Sold Sunday 12 Monday 10 Tuesday 9 Wednesday 5 Thursday 14 Friday 10 Saturday 10 The mean number of cell phones sold by the store for the week was __________. 5 phones 70 phones 9 phones 10 phones 5 The average daily rainfall for the past week in the town of Hope Cove is normally distributed, with a mean rainfall of 2.1 inches and a standard deviation of 0.2 inches. If the distribution is normal, what percent of data lies between 1.9 inches and 2.3 inches of rainfall? 34% 99.7% 68% 95% 6 Choose the statement that correctly describes a normal distribution. The approximate percent of values lying within two standard deviations of the mean is 47.5%. Approximately 68% of the values are greater than the mean value. The approximate percent of values lying within three standard deviations of the mean is 49.85%. Approximately 68% of the values lie within one standard deviation of the mean. 7 Hannah noted the height of each student in her class and found that the mean height of the students is 56 inches, with a standard deviation of 1.2 inches. The height of one of the students, James, is 59 inches. What is the z-score for James' height? -3.6 2.5 3.6 -2.5 [Show More]
Last updated: 1 month ago
Preview 5 out of 39 pages
Loading document previews ...
Buy this document to get the full access instantly
Instant Download Access after purchase
Buy NowInstant download
We Accept:
Sophia Learning College Algebra Milestone Complete Bundle.
By Dr Medina Reed 1 year ago
$32
11
Can't find what you want? Try our AI powered Search
Connected school, study & course
About the document
Uploaded On
Aug 27, 2022
Number of pages
39
Written in
This document has been written for:
Uploaded
Aug 27, 2022
Downloads
0
Views
173
In Scholarfriends, a student can earn by offering help to other student. Students can help other students with materials by upploading their notes and earn money.
We're available through e-mail, Twitter, Facebook, and live chat.
FAQ
Questions? Leave a message!
Copyright © Scholarfriends · High quality services·