Perform a hypothesis test to determine if there is a signify

Assignment Help Basic Statistics
Reference no: EM13262442

3) An ER nurse notices that when she and her colleagues are asked to work overtime, they seem to get less sleep (rather than just having less free time).  She collects data from all of the nurses on her shift on the number of hours of overtime worked on their last shift and the amount of sleep they got that evening.

Hours of overtime Hours of sleep

3 6

0 9

1 7

5 4

4 6

 

a) Create a scatterplot for these data. 

b) Calculate the correlation coefficient. 

c) Perform a hypothesis test to determine if there is a significant correlation (α =0.05) between number of hours of overtime worked and hours of sleep


Attachment:- 219134_1_NM-Statistics-4.docx

Reference no: EM13262442

Questions Cloud

Explain whatever is represented by the chemical formula : The beginning of the quetsion The value is called Avogadro's number. The term formula unit is a generic phrase that can mean a molecule, atom, ion, or whatever is represented by the chemical formula.
Use the tvm keys from a calculator : Interest rate or discount rate. Fill in the interest rate for the following table using one of the three methods below.
Write verilog behavioral dataflow model for expandable alu : Write a Verilog behavioral dataflow model for a 4-bit expandable ALU. Create it using a hierarchical description that includes a behavioral dataflow model of an expandable 1-bit ALU.
How far away is the planet venus : Radar is used to determine distances to various objects by measuring the round-trip time for an echo from the object. How far away is the planet Venus if the echo time is 1500 s
Perform a hypothesis test to determine if there is a signify : Perform a hypothesis test to determine if there is a significant correlation (α =0.05) between number of hours of overtime worked and hours of sleep
Explain the fact that their roe is about 12 percent : It is widely known that grocery chains have low profit margins-on average, they earn about 1 percent on sales. How would you explain the fact that their ROE is about 12 percent? Does this seem logical?
The silicon in the plate is a mixture of naturally isotopes : The silicon in the plate is a mixture of naturally occurring isotopes. One of the those isotopes is silicon-30, which has an atomic mass of 29.97376 and a percent natural abundance of 3.10.
Which of the following statements is most correct : Project A has an IRR of 15%. Project B has an IRR of 14%. Both projects have a required rate of return of 12%. Which of the following statements is most correct?
What is the range of wavelengths broadcast : If the frequencies are swept over a plusminus.gif2.00% range centered on 86.0 MHz, what is the range of wavelengths broadcast

Reviews

Write a Review

Basic Statistics Questions & Answers

  Hurricanes being formed during randomly selected year

History suggests that the average number of hurricanes formed during a year is 6.0 hurricanes. Find the probability of at most three hurricanes being formed during a randomly selected year.

  Committing a type one error

Find the probability of committing a type I error.

  Estimate of investment earnings

Joe is being audited by the IRS and must provide an estimate for his investment earnings over the next four years. After a thorough search, Joe can only find the following records.

  Analysis of confidence interval

A random sample of 80 observations from a normally distributed population produced a mean x(bar over the x)= 22.6 . Find a 95% confidence interval for the population mean m if the population standard deviation

  Comparisons are lost in development of autoregressive model

How many comparisons are lost in the development of the autoregressive model and how many parameters do you need to estimate? Which of the orginal 40 values do you need for forecasting and state the model?

  Determining confidence interval for true time battery pack

Determine a 95% confidence interval for true time battery pack can function before having to be recharged.

  How likely is it that results of sample occurred

With mean 120 mmHg and standard deviation 20 mmHg. The mean systolic blood pressure for the sample was 126 mmHg. How likely is it that the results of this sample occurred?

  What percentage of pregnancies last between in range

Assume that the duration of human pregnancies can be described by a normal model with mean 268 days and standard deviation 17 days. What percentage of pregnancies should last between 260 and 270 days?

  Probability and odds in favor of event

The odds in favor of an event are the number of successes divided by the number of failures. The probability of this event occurring is the number of successes divided by the sum of the number of successes and the number of failures.

  Find what percent of males weigh more

Adults is approximately normal with a mean of 191 lbs. and a standard deviation of 20 lbs. Using the 68-95-99.7 rule. What percent of males weigh more than 211 lbs?

  Drawing a card and getting a spade

What are the odds against drawing a card from an ordinary deck of cards and getting a spade?

  Understanding and calculating probability distribution

A researcher is studying IQ levels. From past experience she knows the population mean IQ for adults is 110 and the standard deviation is 15.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd