# Confidence Interval and Normal Probability

Number 1
The union for a particular industry has determined that the standard deviation of the daily wages Find a 90% confidence interval for the true mean daily wage of all union workers in the industry. Then complete the table below.

Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place Standard deviation is 18
Number is 100 of its workers is \$ 18. A random sample of 100 workers in this industry has a mean daily wage of \$119.

2. Adults who are being tested for dementia are asked to perform mental tasks such as listing as many animals as
they can in one minute. Here are the numbers of animals listed in one minute by normal (non-demented) adults:
19, 25, 12, 16, 12, 12, 10, 18.

(a) What is the median of this data set? If your answer is not an integer, round your answer to at least one decimal place.

(b) What is the mean of this data set? If your answer is not an integer, round your answer to at least one decimal place.

(c) How many modes does the data set have, and what are their values?
Indicate the number of modes by selecting the appropriate line, and then indicate the value(s) of the mode(s), if applicable.
1. zero modes:
2. one mode: ____
3. two modes: _____ _____

3. For each of the variables described below, indicate whether it is a quantitative or a categorical (qualitative) variable.

Also, indicate the level of measurement for the variable: nominal, ordinal, interval, or ratio.
Make sure your responses are the most specific possible.

a)Temperature (Degrees Celsius)
b) Price (in dollars) of a shirt on the clearance
(c) Medal won in a recent race (gold, silver,

4. Which of the following variables are best thought of as continuous, which discrete? Indicate your choice for each by

(a) The body temperature measurement of a participant in a lie-detector test.
Discrete Continuous

(b) The length of the arm of a heavyweight boxer.
Discrete Continuous

(c) The time for a participant to identify the color of the letters when the word red is shown in green letters on a computer screen.
Discrete Continuous

(d) The highest grade level (9 ,10 , or 11 ) completed by a high-school dropout.
Discrete Continuous

5. Let be a standard normal random variable. Calculate the following probabilities using the calculator provided.

Round your responses to at least three decimal places.

P(Z<-1.19)=
P(Z> 1.17)=
P(-0.97<Z<2.03)=

7. Let Z be a standard normal random variable. Use the calculator provided to determine the value of such that

P(-1.17<Z<c)=0.8632
.
Carry your intermediate computations to at least four decimal places. Round your answer to at least two decimal
places.

8 Suppose that scores on a particular test are normally distributed with a mean of 110 and a standard deviation of 16. What is the minimum score needed to be in the top 2% of the scores on the test?

Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place.

9. Use the calculator provided to solve the following problems.
Consider a t distribution with 15 degrees of freedom. Compute p(-1.23<t<1.23) . Round your answer to at least three decimal places.

Consider a t distribution with 6 degrees of freedom. Find the value of such that P(t>c)=0.01 . Round your answer to at least three decimal places.

10. Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average of 32 grams of fat per pound, with a standard deviation of 7 grams of fat per pound. A random sample of 40 farm-raised trout is selected. The mean fat content for the sample is 31.1 grams per pound.

Find the probability of observing a sample mean of 31.1 grams of fat per pound or less in a random sample of 40 farm-raised trout.

Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal

Calculate the price
Pages (550 words)
\$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with AssignmentHelpWeb
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Architecture, Building and Planning
The assignment was well written and the paper was delivered on time. I really enjoyed your services.
Customer 452441, September 23rd, 2022
Anthropology
excellent loved the services
Customer 452443, September 23rd, 2022
Psychology
Thanks a lot the paper was excellent
Customer 452453, October 26th, 2022
Nursing
The paper was EXCELLENT. Thank you
Customer 452449, September 23rd, 2022
English 101
Very good job. I actually got an A
Customer 452443, September 25th, 2022
Thank you!
Customer 452451, November 27th, 2022
Anthropology
Excellent services will definitely come back
Customer 452441, September 23rd, 2022
Job well done. Finish paper faster than expected. Thank you!
Customer 452451, October 3rd, 2022
Theology
Job well done and completed in a timely fashioned!
Customer 452451, November 18th, 2022
Excellent service - thank you!
Customer 452469, February 20th, 2023
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend