Null hypothesis and alternative hypothesis

Assignment Help Basic Statistics
Reference no: EM13110278

You work at a hospital that has always had about 100 emloyees staffed at night. You think that the number of employees staffed at night has recently decreased and would like to test this claim. If you run a hypothesis test, which of the following statements would fit your problem?

a) you have a two tail test.

b) your alternative hypothesis could be stated as the population mean is less than 100.

c) your null hypothesis could be stated as the population mean is greater than or equal to 100.

d) A, B, and C are correct

e) Just B and C are correct

Reference no: EM13110278

Questions Cloud

Draw the total market demand curve : Draw the total market demand curve. Label the axes and intercepts. Discuss how the price elasticity of demand changes along the demand curve.
Identify changes in forecasting methodologies and approaches : Identify changes in forecasting methodologies and approaches that have been influenced by current economic conditions.
Information about statistical hypothesis : Is there a significant difference between the lengths of front and rear legs of a certain breed of horses. The results of the measurements in inches made in 10 of these animals are:
Discuss the the importance of translational : Discuss the the importance of translational control in early development in animals. Discuss how the experiments on matroclinous inheritance (maternal-effect genes) elucidate the linkage between cleavage events and later development.
Null hypothesis and alternative hypothesis : You work at a hospital that has always had about 100 emloyees staffed at night. You think that the number of employees staffed at night has recently decreased and would like to test this claim.
Difference in proportion of viewers watching three channels : Random sample of 150 viewers last night revealed 53 watched news on WNAE, 64 watched on WRRN, and 33 on WSPD. At .05 significance level, is there a difference in proportion of viewers watching three channels?
Question about fixed order interval system : How much gravy should be ordered using a fixed order interval system? Order is being placed on Thursday and the fiscal week begins on Thursday and ends on Wednesday.
What is the order of the loci : Suppose you analyze three phenotypes in the common fruit fly Drosophila (A,B,D). The recessive alleles causing mutant phenotypes are represented by a,b, and d.
Stating conclusions about claims : In these questions we have to make a decision about the given claim. For example, if the claim is that a coin favors heads and sample results consists of 11 heads in 20 flips, conclude that there is not sufficient enough evidence to support the cl..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Confidence interval for the student population proportion

Of the 250 students in a blind taste test, 150 (60%) preferred Milwaukee's Best over Natural Light. Then the 90% confidence interval for the student population proportion preferring Milwaukee's Best is:

  Hypothesis testing for motor vehicle department

Data from the Motor Vehicle Department indicate that 80% of all licensed drivers are older than age 25. In a sample of n=60 people who recently received speeding tickets, 38 were older than 25 years and the other 22 were age 25 or younger.

  Linear relation between degree of stenosis-reactive nuclei

Are you doubtful of any of these data points? if so why does there show to be a linear relation between degree of stenosis and nuber of reactive nuclei?

  Calculating the probability using z-score

How many ounces should they advertise on the box if they want to be sure that no more than 0.5% of the boxes are filled less than that advertised amount?

  What alpha level would it be significant

Testing for population mean - How would this information be useful to you if you were the college register?

  Independent samples t test and levene test

See if there is a difference in their means and variances.

  What assumption tests should be used

What assumption tests should be used? A fifth grade science teacher want to know if there is a relationship between final exam scores and overall course points after adjusting for a quiz score.

  Argument or compose of a rebuttal

Do you think this statement has any merit? Why or why not? Explain why the manager may have said it and then further substantiate his argument or compose a rebuttal.

  Estimating a population proportion

a) Determine the proportion of instances that the duration was less than 240 seconds. Also express the proportion as a percent. (hint: proportion is number of successes divided by total number.)

  Probability that first order come fourth sales call of day

What is the probability that the first order will come on the fourth sales call of the day? Please show work and round to 4 decimal places.

  Standard deviation effect large adequate-two-tailed effect

If population standard deviation is σ = 8 is effect large adequate to be statistically significant? Use two - tailed effect with α = .05

  Point estimate and interval estimate for population

Differentiate between a point estimate and an interval estimate for a population parameter. What is necessary for an interval estimate to be a confidence interval?

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