The ground-to-air missle battalion needs people with a

Assignment Help Basic Statistics
Reference no: EM13621598

The Army gives a battery of exams to all new recruits. One exam measures a person's ability to work with technical machinery. This exam was given to a random sample of 360 recruits. In the table below x = score ont the test and f is the frequency of new recruits with score x.

x 1 2 3 4 5 6 7 8 8 10
f 28 42 79 83 51 36 18 12 7 4

A) Find the probability distribution of these scores.

B) The ground-to-air missle battalion needs people with a score of 7 or higher on the exam. What is the probability that a new recruit will meet that criteria?

C) Compute the expected value of these scores.

D) Compute the standard deviation of these scores.

Reference no: EM13621598

Questions Cloud

Two cylinders are made of the same unknown material the : two cylinders are made of the same unknown material. the first has a radius r1 resistance r1 and mass m1. the second
In order to estimate the difference in the yearly incomes : in order to estimate the difference in the yearly incomes of marketing managers in the east and west of the united
Famas llamas has a weighted average cost of capital of 102 : famas llamas has a weighted average cost of capital of 10.2 percent. the companys cost of equity is 14 percent and its
A sheet of glass has nred 152 and nviolet 155 a narrow : a sheet of glass has nred 1.52 and nviolet 1.55. a narrow beam of white light is incident on the glass at 30 degrees.
The ground-to-air missle battalion needs people with a : the army gives a battery of exams to all new recruits. one exam measures a persons ability to work with technical
Aunt tillie has agreed to loan you 10000 for the down : aunt tillie has agreed to loan you 10000 for the down payment on a home. you have decided to structure the loan so that
Determine the maximum theoretical power that can be : steam at mpa 500 degrees c enters an insulted turbine operating at steady state with a mass flow rate of 7 kgs and
Flly explaindiscuss the fama-french three factor model : fully explaindiscuss the fama-french three factor model. assuming the model is reasonably valid how should equity
Here are the golf scores of 12 members of a college womens : here are the golf scores of 12 members of a college womens golf team in two rounds of tournament play. a golf score is

Reviews

Write a Review

Basic Statistics Questions & Answers

  Computation of goodness-of-fit test

In a goodness-of-fit test where the sample size is 200, there are 5 categories, and the significant level in .05. The critical value of X2 is.

  Does this sample provide enough evidence to refute the age

bobs sporting goods believes the average age of its customers is 40 or less. a random sample of 60 customers was

  According to a survey published by compsych corp 54 of all

question according to a survey published by compsych corp. 54 of all workers read email while they are talking on the

  Hypotheses test for single mean

They find that these 100 people lost an average of 38 hours with a standard deviation of 9.5 hours. What is the P-value for this significance test?

  The mean healing time for these subjects is days we will

suppose were testing a new antibacterial cream formulation cs on a small cut made on the inner forearm. we know from

  There are six ways in which a person and the situation

there are six ways in which a person and the situation interact to shape a persons goals thoughts feelings and

  Evaluate total sum of squares

Reading highway signs is not always easy, especially if your vision is imperfect. Vision in general tends to deteriorate with age. Two researchers conducted a study to determine if the distance at which a standard highway sign could be recognized ..

  Obtain the least square weights

Considering the four weights and assuming the weights are independent with a constant variance, obtain the least square weights of A and B.

  Find time the employer allow employees to finish the job

The time required to do the job is normally distributed and has a mean time of 28 minutes with a standard deviation of 5 minutes. How much time should the employer allow employees to finish the job?

  Statistics-probability-distribution

Consider a random sample of six families who are asked if their children have an influence on their vacation destination.

  Compute the standard error of the proportion calculate the

bentley foods inc. a large manufacturer of frozen foods has developed a new line of frozen pizza. management has agreed

  Determining hypothesis testing of mean-p-value method

Auntie Pam's Home Made Wild Grape Jelly has been a great hit through online sales. She has recently expanded her small factory and acquired a new filler machine to accommodate the increased demand, especially for the 12 ounce jar, which is the mos..

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