User Account

All Pages

Mean score and standard deviation

Assignment Help Basic Statistics
Reference no: EM1322545

Lewis earned 85 on his biology midterm and 81 on his history midterm. In the biology class the mean score was 79 with standard deviation 5. In the history class the mean score was 76 with standard deviation 3.

a) Convert each midterm score to a standard z score.

b) On which test did he do better compared to the rest of the class?

Reference no: EM1322545

Questions Cloud

How far from the impact point will the boat : Two charges are placed on the x axis. One of the charges q1= +8.5 C is at x1 = + 3.0 cm and the other q2= -21C is at x1 = + 9.0 cm. Find the net electric field (magnitude and direction) at.
Find the sum of the least squares slope : Using t test for significance of slope to determine whether the independent variable is a significant predictor  of the dependent variable - Find the sum of the least squares slope and intercept parameter?
Estimating confidence interval for mean value : Estimating confidence interval for mean value of y and find a 95% confidence interval for the expected average total sleep time for a child of age 12
Z intervals to raw score x intervals : Convert each of the following z intervals to raw score x intervals:
Mean score and standard deviation : In the history class the mean score was 76 with standard deviation 3.
Final good and intermediate good : What is the difference between a final good and an intermediate good? Give one example of each. How are they treated in GDP calculations?
Probability values for the given discrete distribution : Computing the probability values for the given discrete distribution - What is the probability that you did not shake hands with a person with the flu
Stricter regulations of banking industry : Some people have argued for stricter regulations of the banking industry in the wake of the subprime mortgage meltdown.
Evaluate the mean and the median : Evaluate the mean, the median, and the mode of the salaries. Which best describes a typical salary and Evaluate the range, variance, and standard deviation of the data set. Interpret the results in the context of the real-life setting.

Reviews

Write a Review

Basic Statistics Questions & Answers

  To test the claim using two proportion z test

Obtain a test statistic and  p -value. Interpret the results at  α  = .01.

  Confidence interval for proportion of delinquent customer

What is the 95% confidence interval for the proportion of all delinquent customer accounts at this manufacturing company?

  Drawing the histogram for the given data

Create a histogram over five class intervals.

  Estimating confidence interval using the given data

What is the 95% confidence interval estimate of the mean television viewing time per week during the 8:00 p.m. to 11:00 p.m. time period?

  Probability that student eats at fast food restaurant

Compute the probability that student eats at fast food restaurant 2 or more times per week?

  Confidence using the critical value approach

At 95% confidence using the critical value approach, determine if the proportion of females in the company is significantly less than 50%.

  Normal distribution yield a good approximation

Does the normal distribution yield a good approximation of the actual results?

  Confidence-interval level

Increasing the confidence-interval level from .95 to .99

  Population mean waiting time

At a 5% level of significance, is there sufficient evidence that the population mean waiting time is now less than 3.7 minutes?

  Traditional method of hypothesis testing

Test the given claim using the traditional method of hypothesis testing.

  Confidence interval estimate for the proportion

When would you use hypothesis testing and when would you use confidence intervals?

  Finding value of test statistic using two-tail ''z''

A researcher is interested in whether social assertiveness might be influenced by training procedures. Two groups of college sophomores are randomly selected. Group A subjects are assigned to the "training sessions" and Group B subjects do not rec..

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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