Several psychology students are unprepared for a surprise

Assignment Help Basic Statistics
Reference no: EM13616240

Several psychology students are unprepared for a surprise true/false test with 11 questions, and all of their answers or guesses.

Find the mean and the standard deviation for the number of correct answers for such students.

Would it be unusual for a student to pass by guessing a getting at least 5 correct answers?

Reference no: EM13616240

Questions Cloud

You earned a 71 nominal rate of return on your investments : 1. you earned a 7.1 nominal rate of return on your investments over the past year. but at the same time the reported
Explain how do you declare a variable as binary or integer : explain how do you declare a variable as binary or integer in excel solver?1.briefly explain the results of a what-if
Find the mean and standard deviation for the number of : a government agency has specialists who analyze the frequencies of letters of the alphabet in an attempt to decipher
The time t between emissions radioactive emissions has an : the time t between emissions radioactive emissions has an eponential distribution with a mean of 4 seconds between
Several psychology students are unprepared for a surprise : several psychology students are unprepared for a surprise truefalse test with 11 questions and all of their answers or
A sample of 850 people resulted in a confidence interval : 1. for a standard normal model find the z-value that is less than the mean and for which 67 of the area under the
One environmental group did a study of recycling habits in : one environmental group did a study of recycling habits in a california community. it found that 70 of the aluminum
Golfweek reported in 2003 that the driving distance for the : golfweek reported in 2003 that the driving distance for the top 100 golfers on the pga tour is between 287.7 and 310.6
A horizontal desk surface measures 185 m x 148 m if earths : a horizontal desk surface measures 1.85 m x 1.48 m. if earths magnetic field has magnitude 0.436 mt and is directed

Reviews

Write a Review

Basic Statistics Questions & Answers

  Determine hernandez optimal shipping quantities

Determine Hernandez's optimal shipping quantities so as to minimize total transportation costs.

  The lengths in centimetres of nails produced in a factory

the lengths in centimetres of nails produced in a factory are normally distributed with mean 4.0 and variance 0.0016.

  Decision regarding the null hypothesis

Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.

  For her tuesday class of 40 students the mean number of

question dr. patton is a professor of english. recently she counted the number of misspelled words in a group of

  Point estimate p-hat and margin of error

Find the point estimate p-hat and the margin of error for the confidence interval (0.444, 0.484)

  Evaluate difference-mean weekly deposits-confidence interval

sample mean = 3.5, standard deviation = 0.9. Use 98% confidence interval to evaluate difference in mean weekly deposits into IRAs for each bank.

  Determining two normal distributions

One normal curve has mean 23 and standard deviation 1, a second normal curve has mean 5 and standard deviation 10. The curve that is more dispersed, or spread out, is

  Find how many hunters must be included in the survey

How many hunters must be included in the survey? Assume that data gathered in earlier surveys have shown € to be approximately 10.

  Suppose that contamination particle size in micrometers

suppose that contamination particle size in micrometers canbe modeled as fx 2x-3nbspfor 1ltx and fx 0 for xlt 1a

  How diameter of orange compare with mean diameter

Normal with a standard deviation of 0.3 inch. How does the diameter of an orange at the 67th percentile compare with the mean diameter?

  Evaluating multiple regression model

Evaluate the multiple regression model between quantity sold (Y) and following explanatory variables: average price of deep-dish pizzas, monthly advertising expenditures, and disposable income per household in areas surrounding outlets.

  How do you calculate an exact 99% confidence interval for

Out of a random sample 167 students pass an exam out of the 300. how do you calculate an exact 99% confidence interval for the proportion of sudents who passed the exam?

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