In a study done in 2015, it was estimated that about 45% of the world’s population...
In a study done in 2015, it was estimated that about 45% of the world’s population used some form of online social media. The average time spent per day by social media users was found to be 2.49 hours per day, with a standard deviation of 0.515 hours. Assume the distribution of this data to be normal.
a) What is the probability that a randomly chosen social media user spends more than 3.00 hours per day on social media?
b) What is the probability that the average time spent by a randomly selected group of 12 social media users is at most 3.00 hours?
c) What is the probability that the average time spent by a randomly selected group of 12 social media users is between 2.05 hours and 3.00 hours?
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In a study done in 2015, it was estimated that about 45% of the
world’s population...
(5 points, 1 point each) According to survey data by Global Webindex, people spend an average...
(5 points, 1 point each) According to survey data by Global Webindex, people spend an average of 2 hours and 22 minutes (142 minutes) per day on social media. The sample standard deviation given was 43 minutes. Assume this data is normal distributed an answer the following questions. a. What is the probability that a randomly selected person spends more than 2 hours on social media? b. What is the probability that a randomly selected person spends exactly 90 minutes...
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Researchers doing a study comparing time spent on social media and time spent on studying randomly...
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Q7 The percentage of adult users of the Internet who use social media has increased over...
Q7
The percentage of adult users of the Internet who use social
media has increased over time. Of adult Internet users age
18–49,
The percentage of adult users of the Internet who use social media has increased over time. Of adult Internet users age 18-49, 81% use social media. Of adult Internet users age 50 and older, 53% use social media. Assume that 52% of adult Internet users are age 18-49. (a) What is the probability that a randomly selected...
The time college students spend on the internet follows a Normal distribution. At Johnson University, the...
The time college students spend on the internet follows a Normal distribution. At Johnson University, the mean time is 6 hours per day with a standard deviation of 1.5 hours per day. If 100 Johnson University students are randomly selected, what is the probability that the average time spent on the internet will be more than 6.2 hours per day? ____________ Round to 4 places. If 100 Johnson University students are randomly selected, what is the probability that the average...
Notation for hypothesis tests about a population mean Suppose you are conducting a study about how...
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Question 3 A study of college freshmen's study habits found that the time (in hours) that...
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A group of students at a major university were asked how much time they spent on...
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(5 points, 1 point each) According to survey data by Global Webindex, people spend an average of 2 hours and 22 minutes (142 minutes) per day on social media. The sample standard deviation given was 43 minutes. Assume this data is normal distributed an answer the following questions. a. What is the probability that a randomly selected person spends more than 2 hours on social media? b. What is the probability that a randomly selected person spends exactly 90 minutes...
Social media and entertainment account for two-thirds of the time spent on mobile apps, with those between 18 and 34 spending approximately two hours a day using social media and entertainment apps. Social media apps have become the primary platform for users to keep informed on news, culture, and their family and friends, while entertainment apps fill pockets of free time throughout the day. Provided is the average monthly time spent per mobile app user on social and entertainment categories...
Researchers doing a study comparing time spent on social media and time spent on studying randomly sampled 200 students at a major university. They found that students in the sample spent an average of 2.3 hours per day on social media and an average of 1.8 hours per day on studying. If all the students at the university in fact spent 2.2 hours per day on studying, with a standard deviation of 2 hours, the shape of the sampling distribution...
Q7
The percentage of adult users of the Internet who use social
media has increased over time. Of adult Internet users age
18–49,
The percentage of adult users of the Internet who use social media has increased over time. Of adult Internet users age 18-49, 81% use social media. Of adult Internet users age 50 and older, 53% use social media. Assume that 52% of adult Internet users are age 18-49. (a) What is the probability that a randomly selected...
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A group of students at a major university were asked how much time they spent on social media. The count for how which approach to social media was most commonly used was as follows: Facebook on Twitter on Facebook on Twitter on Instagram Other on Computer Computer Phone Phone on Phone Phone 73 112 209 118 56 Use the table above to answer questions 3-5. 3) Uses a computer primarily for social media 4) Does not use Facebook as primary...
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