Question

In order to approximate the number of text messages sent daily by Swedish teenagers, Neu Star...

In order to approximate the number of text messages sent daily by Swedish teenagers, Neu Star Communications took a random sample of Swedish youth, finding the number of text messages they sent on a given day in 2018: (use 2 digits after decimal point)

Hint: Σ X = 984 Σ X2 = 80784 n=12

Point Estimate for population mean is

Point estimate for population standard deviation is

Find 90% confidence interval for the population mean number of calls received by the help desk per day

Error margin (ME)

Lower bound and upper bound of the confidence interval is Answer

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
3. In order to approximate the number of text messages sent daily by Swedish teenagers, Neu...
3. In order to approximate the number of text messages sent daily by Swedish teenagers, Neu Star Communications took a random sample of Swedish youth, finding the number of text messages they sent on a given day in 2018: HOURS 78 86 86 79 84 79 89 86 86 84 79 81 What is the point estimate of the population mean? (Round your answer to 2 decimal places.) ESTIMATED POPULATION MEAN: …..............? Develop a 98% confidence interval for the population...
Suppose an advertising agency wishes to know the average number of text messages a typical student...
Suppose an advertising agency wishes to know the average number of text messages a typical student sends in one month. They take a simple random sample of 25 students and have them give the number of sent texts counted in the previous month’s bill. The sample has a mean of x¯ = 1800 texts and standard deviation of s = 500 texts. (a) What is the sample distribution, normal or binomial? (b) How many degrees of freedom are there? (c)...
Suppose an advertising agency wishes to know the average number of text messages a typical student...
Suppose an advertising agency wishes to know the average number of text messages a typical student sends in one month. They take a simple random sample of 25 students and have them give the number of sent texts counted in the previous month’s bill. The sample has a mean of x¯ = 1800 texts and standard deviation of s = 500 texts. (a) What is the sample distribution, normal or binomial? (b) How many degrees of freedom are there? (c)...
1. The following set of data lists the number of text messages sent per day in...
1. The following set of data lists the number of text messages sent per day in a sample of college students and a sample of their parents. College students: 43, 12, 14, 13, 54, 7, 50, 15, 21, 21 Parents: 24, 0, 20, 21, 3, 21, 17, 19, 5, 10 Compute the mean, median, mode and sum of squares for each group 2. Compute the range, variance and standard deviation for each group 3. Under what circumstances would the median...
For these two questions In order to estimate the number of calls to expect at a...
For these two questions In order to estimate the number of calls to expect at a new suicide hotline, volunteers contact a random sample of 35 similar hotlines across the nation and find that the sample mean is 42.0 calls per month and the sample standard deviation is 5.0 calls per month. Assume that the population standard deviation is unknown. Find the error of estimate for a 90% confidence interval. Group of answer choices 1.39 1.08 1.43 1.10 Assume that...
Most sod distributors claim that sod has to be watered twice a day for at least...
Most sod distributors claim that sod has to be watered twice a day for at least 8 days in order to adhere to its new environment. A researcher takes a random sample of 75 patches of sod and waters them until the root base adheres to the ground. The average number of days it took for the roots to adhere to the ground was 9.9 days. Assume that the population standard deviation σ is 2.3 days. What is the point...
A study was conducted in order to estimate μ, the mean number of weekly hours that...
A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be σ = 3.6 hours. A similar study conducted a year earlier estimated that μ, the mean number of weekly hours that U.S. adults use computers at home,...
--In a sampling distribution of sample mean differences, each “building block” represents: a.) a person b.)...
--In a sampling distribution of sample mean differences, each “building block” represents: a.) a person b.) a sample mean c.) the difference between a sample mean and the population mean d.) the difference between two sample means --Perhaps kids who live in communities with more potential for face-to-face interaction text less than kids from other types of communities. Using the ANOVA below, compare rural, suburban, and urban youth on the number of texts per day. Explain the results. Given the...
Applied Economics - The Institutional Framework Who the Looting Ruins 'Seventeen years of work is gone,'...
Applied Economics - The Institutional Framework Who the Looting Ruins 'Seventeen years of work is gone,' said the owner of an Ecuadorean eatery. By The Editorial Board June 4, 2020 7:37 pm ET Luis Tamay is an immigrant with an Ecuadorean restaurant in Minneapolis. Zola Dias is the black owner of a clothing store in Atlanta. Sam Mabrouk has a denim shop in Columbus, Ohio. They're only a few of the people whom intellectuals overlook whenever they rationalize rioting or...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT