A researcher found that the number of days of school missed per semester by college students...
A researcher found that the number of days of school missed per semester by college students was normally distributed with a mean of 4.00 and standard deviation of 1.00. What conclusion can you draw from these data?
No students missed fewer than 3 days of school per semester.
All students missed at least one day of school per semester.
Very few students missed between 3 and 5 days of school per semester.
Most students missed between 3 and 5 days of school per semester.
Homework Answers
Add Answer to:
A researcher found that the number of days of school missed per
semester by college students...
Among the students at a particular college, the mean number of days absent from classes is...
Among the students at a particular college, the mean number of days absent from classes is 3.5 with a standard deviation of 1.2. Assuming absences at the college are normally distributed, determine the probability that a particular student missed between 3.5 and 5 days
7. A researcher surveys 40 college students to determine how much they spend on textbooks per...
7. A researcher surveys 40 college students to determine how much they spend on textbooks per semester. The responses have a sample mean of $426. The population standard deviation is known to be $83. Find the 95% confidence interval of the true mean. Assume the variable is normally distributed.
Assume that the number of hours college students spend working per week is normally distributed with...
Assume that the number of hours college students spend working
per week is normally distributed with a mean of 18 hours and
standard deviation of 4 hours
2. Assume that the number of hours that college students spend working per week is normally distributed with a mean of 18 hours and a standard deviation of 4 hours. a. Mark the 7 hash marks on the x-axis with the appropriate labels in hours worked per week. Recall that the center hash...
9) A teacher believes one of his students is a "test-dodger." The student missed ten days of a 90-day semester. The...
9) A teacher believes one of his students is a "test-dodger." The student missed ten days of a 90-day semester. There were four test days. The student missed three tests. WTP he would miss at least three tests purely by luck? show you work.
A researcher is interested in finding a 95% confidence interval for the mean number of times...
A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text. The study included 141 students who averaged 25.7 texts per day. The standard deviation was 21.2 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a tv distribution. 0 and b. With 95% confidence the population mean number of texts per day is between texts. c. If many groups of 141...
The distribution of hours of sleep per week night, among college students, is found to be...
The distribution of hours of sleep per week night, among college students, is found to be Normally distributed, with a mean of 6.5 hours and a standard deviation of 1 hour. What range contains the middle 95% of hours slept per week night by college students (a) 5.5 and 7.5 hours per week night (b) 4.5 and 7.5 hours per week night (c) 4.5 and 8.5 hours per week night 3.19
A recent national survey found that high school students watched an average (mean) of 7.1 DVDs...
A recent national survey found that high school students watched an average (mean) of 7.1 DVDs per month with a population standard deviation of 1.00. A random sample of 33 college students revealed that the mean number of DVDs watched last month was 6.20. At the .05 significance level, can we conclude that college students watch fewer DVDs a month than high school students? 1.) State the decision rule. a.) Reject H0 if z > -1.65 b.) Reject H1 if...
in a recent survey of high school students, it was found that the amount of time...
in a recent survey of high school students, it was found that the amount of time spent on rading books per week, was normally distributed with a mean of 23 minutes. Assume the distribution of weekly reading time follows the normal distribution with a population standart deviation of 2 minutes. Suppose we select a sample of 11 high school students. A- What can we say about the shape of the distributiob of the sample mean time? ….. B- What is...
1. The number of hours per week that 200 college students spend on the Internet is...
1. The number of hours per week that 200 college students spend on the Internet is grouped into classes (0 − 3),(4 − 7),(8 − 11),(12 − 15),(16 − 19),(20 − 23),(24 − 27) with observed frequencies of 12, 25, 36, 45, 34, 31, and 17. The grouped mean and standard deviation are found from the data. The null hypothesis is that the data is normally distributed. Using the mean and standard deviation, the expected frequencies are found to be...
A recent national survey found that high school students watched an average (mean) of 6.6 DVDs...
A recent national survey found that high school students watched an average (mean) of 6.6 DVDs per month with a population standard deviation of 0.90 hour. The distribution of DVDs watched per month follows the normal distribution. A random sample of 43 college students revealed that the mean number of DVDs watched last month was 6.10. At the 0.05 significance level, can we conclude that college students watch fewer DVDs a month than high school students? a. State the null...
7. A researcher surveys 40 college students to determine how much they spend on textbooks per semester. The responses have a sample mean of $426. The population standard deviation is known to be $83. Find the 95% confidence interval of the true mean. Assume the variable is normally distributed.
Assume that the number of hours college students spend working
per week is normally distributed with a mean of 18 hours and
standard deviation of 4 hours
2. Assume that the number of hours that college students spend working per week is normally distributed with a mean of 18 hours and a standard deviation of 4 hours. a. Mark the 7 hash marks on the x-axis with the appropriate labels in hours worked per week. Recall that the center hash...
9) A teacher believes one of his students is a "test-dodger." The student missed ten days of a 90-day semester. There were four test days. The student missed three tests. WTP he would miss at least three tests purely by luck? show you work.
A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text. The study included 141 students who averaged 25.7 texts per day. The standard deviation was 21.2 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a tv distribution. 0 and b. With 95% confidence the population mean number of texts per day is between texts. c. If many groups of 141...
The distribution of hours of sleep per week night, among college students, is found to be Normally distributed, with a mean of 6.5 hours and a standard deviation of 1 hour. What range contains the middle 95% of hours slept per week night by college students (a) 5.5 and 7.5 hours per week night (b) 4.5 and 7.5 hours per week night (c) 4.5 and 8.5 hours per week night 3.19
Most questions answered within 3 hours.
-
On January 1, Year 1, Sheffield Co. issued bonds with a face
value of $200,000, a...
asked 14 seconds ago -
Write a short application that computes the perimeter of a
rectangle. It should allow the user...
asked 10 seconds ago -
An inventory of Product A has to be maintained at NiceCare using
the EOQ model, based...
asked 8 minutes ago -
Define the 2
24.Moral Imperialism
25.Selective Service Act
26.Tulsa Riot
27.Red Scare
28.League of Nations
29....
asked 17 minutes ago -
A laser beam is incident at an angle of 30.6° to the vertical
onto a solution...
asked 23 minutes ago -
NO VECTORS PLEASE
Start a simple Matrix template class
In this lab, you’ll be writing a...
asked 26 minutes ago -
5. Why might the two alleles, taster and non-taster, persist in
human populations over many generations?...
asked 17 minutes ago -
1- What is the energy of a photon with a frequency of 7.01 ×
10¹⁴ s⁻¹?...
asked 42 minutes ago -
Cesar needs to make a decision whether to fertilize his garden
or not. His profit depends...
asked 45 minutes ago -
Illustrate the Substitution Effect, Income Effect and Total
Effect of a normal good and an inferior...
asked 44 minutes ago -
Your company has six-sigma conformance for each of 10 component
that are a part if a...
asked 57 minutes ago -
Explain the buffering components of urine, the chemical
equation, where the system is found and find...
asked 1 hour ago