Question
In: Statistics and Probability
2. School administrators are concerned that important university emails are being automatically (and incorrectly) labeled as...
2. School administrators are concerned that important university emails are being automatically (and incorrectly) labeled as ‘spam’ by email providers. Independent random samples of ‘google mail’ and ‘yahoo.ca’ users are randomly selected. Out of the sample of google mail users (n=200), 150 reported that they had received the email. Out of the sample of yahoo.ca users (n=150), 90 reported that they had received the email. Is there a significant difference in receiving the email between users of google mail and yahoo.ca email providers?
2a. Calculate the test statistic.
2b. Find the p-value for the test. Test for a significant difference at the 1% significance level and state whether you reject or fail to reject the null (and why).
Solutions
orchestra answered 1 year agoRelated Solutions
Administrators at a particular correctional institution were concerned that the offenders being sentenced to their facility...
Administrators at a particular correctional institution were
concerned that the offenders being sentenced to their facility had
particularly high levels of depression. They decided to have a
sample of 65 incoming offenders complete a self-report depression
scale. The particular depression scale they used is normed to have
a mean of 15 in the general population. The offenders from the
institution scored an average of 17 with a standard deviation of 5
over the two years that the testing was conducted....
Administrators at a particular correctional institution were concerned that the offenders being sentenced to their facility...
Administrators at a particular correctional institution were
concerned that the offenders being sentenced to their facility had
particularly high levels of depression. They decided to have a
sample of 65 incoming offenders complete a self-report depression
scale. The particular depression scale they used is normed to have
a mean of 15 in the general population. The offenders from the
institution scored an average of 17 with a standard deviation of 5
over the two years that the testing was conducted....
Administrators at a particular correctional institution were concerned that the offenders being sentenced to their facility...
Administrators at a particular correctional institution were
concerned that the offenders being sentenced to their facility had
particularly high levels of depression. They decided to have a
sample of 65 incoming offenders complete a self-report depression
scale. The particular depression scale they used is normed to have
a mean of 15 in the general population. The offenders from the
institution scored an average of 17 with a standard deviation of 5
over the two years that the testing was conducted....
2. A researcher is concerned about the level of knowledge possessed by university students in the...
2. A researcher is concerned about the level of knowledge
possessed by university students in the field of algebra. Students
completed a high school senior level standardized algebra exam.
Major for students was also recorded. Data in terms of percent
correct is recorded below for 32 students. Use the Microsoft Excel
"Anova Single-Factor" Data Analysis tool to conduct a 1-way ANOVA
test for the data in the following table:
Education
Business/Management
Behavioral/Social Science
Fine Arts
62
82
42
30
81...
Researchers at the University of Pennsylvania School of Medicine have determined that children under 2 years...
Researchers at the University of Pennsylvania School of Medicine
have determined that children under 2 years old who sleep with the
lights on have a 33% chance of becoming myopic before they are 16.
Children who sleep in darkness have a 22% probability of becoming
myopic. A survey indicates that 26% of children under 2 sleep with
some light on. Find the probability that a random child under 2
will become myopic before reaching 16 years old.
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- explain different methods of presenting analysis of expenses and how we should choose these methods for...
- What are the physics principles involved in making a pair of polarized sunglasses?
- This question regards life insurance: What makes someone a candidate for the product? (age, life circumstances,...
- What is the dc gain of a filter with difference equation ?[?] = ?[?] + ?[?...
- Rework problem 35 from the Chapter 2 review exercises in your text, involving auditioning for a...
- Q6: (Sides of a Right Triangle) Write a function that reads three nonzero integers and determines...
- Introduction: Everywhere you look there is an athlete, movie star or someone who thinks they are...
ADVERTISEMENT