Do you think there is sufficient reason to question

Assignment Help Basic Statistics
Reference no: EM13241101

On a police sergeants exam, the historical mean scored was 80 with a standard deviation of 20. Four offiers scored 195,175,191, and 189 respectively. Irregularity.The officers were alleged cronies of the police chief because of their scores. Convert these four offiers socres to a standardized Z-value. Do you think there is sufficient reason to question these four exam scores; and if so how did you make this determination.

Reference no: EM13241101

Questions Cloud

Demonstretes a characteristic of the baroque style : Describe a specific aspect of a painting by Caravaggio that demonstretes a characteristic of the Baroque style.
Analyze the main events of the korean war : Identify and analyze the main events of the Korean War and Cuban Missile Crisis. Then assess how these events affected the relationship between the United States and the Soviet Union. Make sure you use enough details to support your answer.
Assume that the standard deviation is 1500 and the variable : If the average price of a new home is 145,000 what is the minimum and maximum prices of the houses a contractor will need to build to include the middle 80% of the market.
Analyze how the solidarity movement : Analyze how the Solidarity (Solidarnosc) movement in Poland led to the collapse of communism in Poland. Point out what events led to the growth of the Solidarity movement, and then identify and analyze the events that followed Gorbachev's policy of p..
Do you think there is sufficient reason to question : On a police sergeants exam, the historical mean scored was 80 with a standard deviation of 20. Four offiers scored 195,175,191, and 189 respectively
What percent of days will it take him 30 or fewer minutes : An executive drives his vehicle from home to work daily. Driving times are normally distributed with a mean of 35 minutes and standard deviation of 8 minutes.
Which domain local groups might you create : Habibi's has a small network of 20 client workstations and a Windows Server 2008. Seven of those workstations are inside the restaurant and are used by the table servers to place customer orders. Three of the workstations are used by the owner and th..
The equestrian portrait is an important subject : The Equestrian portrait is an important subject. What meanings does this subject convey? Identify several equestrian portraits, describe them carefully and discuss how they are interrelated.
Cultures of mesoamerica-south america and egypt : Speculate on the similarities in the monuments to the Sun god in cultures of Mesoamerica, South America, and Egypt.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Determine the correlation coefficient

What is the dependent variable? is the dependent variable and determine the correlation coefficient. Coefficient of correlation

  Find observational units in time management study

What would the observational units be in this case? Fall, 2008 (d) What are the observational units in your time management study?

  Correlation between hours spent in the course

The correlation between hours spent in the course and exam grades is .8. what percent f variation in exam grades can be explained by hours spent in the course?

  Random sample of metal parts-hypotheses test

As a test the truck company purchases a random sample of metal parts from Steel-R-Us, and then determines if these parts were delivered on-time. Which hypotheses should they test?

  Identify independent variable and dependent variable

Who inhaled oxytocin were more likely to give their money to a trustee compared to people who inhaled an inactive placebo. For this experimental study, identify the independent variable and the dependent variable.

  Psychology help-probability problem

Two events, A and B are equally likely. The chance that either A or B happens on a given trial of an experiment is 0.70, while the chance that they both happen on a given trial is only 0.40.

  Plot the regression line on the scatter plot

Do a complete regression analysis by performing the steps below. Note: No regression should be done when r is not significant. Draw a scatter plot. Compute the correlation coefficient.

  Compute the z values of mean salary for engineers

The mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000. Compute the z values for both 1)Rob and 2)Rachel.

  Interpret the meaning of confidence interval for mean

A sample of 50 bottles reveals a mean weight of 502.1 ml. Construct and interpret a 90% confidence interval for the mean. Be sure to interpret the meaning of this interval.

  Comparing the mean of two group

He will then compare the season batting averages of group A (those with ballet training) and group B (those without ballet training) by comparing the mean of group A with the mean of group B.

  Design contingency table

Design a contingency table that will hold your data. What are your degrees of freedom and critical value at a 0.05 confidence level? You do not need data to answer this.

  Application of hypothesis formation

PiggyBank has narrowed its options down to two incentive plans: The bank doesn't know whether consumers would shop online more than at clothing stores.

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