What is the expected number of service calls

Assignment Help Basic Statistics
Reference no: EM1319185

Expected value, variance and standard deviation.

A volunteer ambulance service handles 0 to 5 service calls on any given day.  The probability distribution for the number of service calls is as follows

Number of Service Calls

Probability

Number of service calls

Probability

0

0.1

3

0.2

1

0.15

4

0.15

2

0.3

5

0.1

a)    What is the expected number of service calls?

b)   What is the variance in the number of service calls?  What is the standard deviation?

Reference no: EM1319185

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  What is the likely number of withdrawals

A university found that 20 percent of its students withdraw without completing the introductory statistics course. 20 students registered for a section of the course this term.

  Probability-determining expected value

You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?

  Hypotheses to determine the perfect adjustment

Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.

  Finding p-value for specific level of significance

At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the  p -value.

  Anova-bps-formatted results

Carry out an ANOVA and  describe in detail  in a BPS-formatted Results section:

  What is the benefit of selecting a simple random

The registrar of a college with a population of N=4,000 full-time students is asked by the president to conduct a survey to measure satisfaction with the quality of life on campus.

  Describe if the life expectancy of people in africa

A sociologist wants to describe if the life expectancy of people in Africa is lesser than the life expectancy of people in Asia.

  Farmers are planning to plant genetically modified crops

A newspaper reports have 58 percent of farmers are planning to plant genetically modified crops presesnt year. The article adds that the poll is based on a random sample.

  Probability density function

Give a mathematical expression for the probability density function of driving distance.

  Probability for a randomly selected employee

Find the probability that a randomly selected employee earns less than $5.43.

  Effect size for independent sample t-test

Compute the effect size with gender as the grouping variable and ADDSC as the dependent variable.

  Which of the following would have a binomial distribution

Which of the following would have a binomial distribution and evaluate the binomial coefficient

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