+1-415-315-9853

info@mywordsolution.com

## Statistics

Multiple choice problems based on the confidence interval and correlation.

1) Find the linear correlation coefficient, r, between x and y. x: 0, 3, 3, 1, 4 y: 1, 7, 2, 5, 5
a)r=.333
b)r=.749
c)r=.974
d)r=.497

2)Express the confidence interval .600, .800 in the form p-hat plus and minus E.
a).8 plus and minus .2
b).6 plus and minus .2
c).6 plus and minus .3
d).7 plus and minus .1

3)Find the critical value. 99% confidence, sigma is unknown, population is normal, n=15.
a)2.977
b)1.645
c)1.965
d)3.360

4) Listed below are intervals (in minutes) between eruptions of the Old Faithful Geyser in Yellowstone National Park. Find the median. 98, 92, 95, 87, 96, 90, 65, 92, 95, 93, 98, 94
a)95.7
b)100
c)91.3
d)93.5

5) In a study of brand recognition 831 consumers knew of Campbell's soup and 18 did not. Use the results to estimate the probability that a randomly selected consumer will recognize Campbell's soup.
a).021
b).979
c).777
d).999

6) A test consists of multiple choice problems, each having 4 possible answers (a, b, c, d), 1 of which is correct. Assume you guess the answers to 6 such problems. Find the probability that the first 2 guesses are wrong and the last 4 guesses are correct.
1).00220
2).10
3).02200
4).667

7)The mean and standard deviation of a normal distribution is 100 and 15 respectively. Find the probability that a value is between 110 and 120.
a).1382
b).1596
c).9404
d).2179

8)Construct the confidence interval for the population proportion where n=1200, x=800, 99% confidence.
a).632, .702
b).612, .712
c).368, .902
d).512, .602

9)A dietician obtains the amounts of sugar from 100 centigrams in each of 10 different cereals, including Cheerios, Corn Flakes, Froot Loops, and 7 others. Those values are listed below. Find the mean. 3, 24, 30, 47, 43, 7, 47, 13, 44, 39
1)34.5
2)47
3)25
4)29.7

Statistics and Probability, Statistics

• Category:- Statistics and Probability
• Reference No.:- M922001

Have any Question?

## Related Questions in Statistics and Probability

### 1 travelers are asked how many hours they are willing to

1. Travelers are asked how many hours they are willing to drive while on vacation in one day. A total of 86 travelers reported a mean of 11.55 hours with a standard deviation of 1.2 hours. Find the 99% confidence interva ...

### Relate the content of this video to the industry segment of

Relate the content of this video to the Industry segment of the external environment by describing which of Porter's Five Competitive Forces is the focus of Outsell Consulting's value proposition? What is the nature of t ...

### A group of statistics students decided to conduct a survey

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spend studying per week. Based on a simple random sample, they surveyed 45 students. The s ...

### A researcher studying correctional treatment on 192 sex

A researcher studying correctional treatment on 192 sex offenders composed of 10 females and 182 males finds that 11 males along with 1 female had reoffended. He then calculates the percentages and finds that 10% of fema ...

### If the difference between two means is not statistically

If the difference between two means is not statistically significant, how certain are you that the independent variable really does not affect the dependent variable?

### 1 how do quasi-experimental designs differ from true

1. How do quasi-experimental designs differ from true experiments? 2. Under what circumstances would a researcher use a quasi-experimental rather than an experimental design?

### The time it takes to complete a standardized exam is

The time it takes to complete a standardized exam is normally distributed with a mean of 70 minutes and a standard deviation of 10 minutes. How much time should be allowed for the exam so that 80% of the students will fi ...

### St augustine and socrates both acknowledge that the perfect

St. Augustine and Socrates both acknowledge that the perfect city cannot exist in this world. For each of them, what is it about the nature of human beings and of political life that makes this impossible?

### Dan is at the bottom of donnas preference list and donna is

Dan is at the bottom of Donna's preference list, and Donna is at the bottom of Dan's preference list. Is it possible that there is a stable matching that matches Dan to Donna? Justify your answer.

### Consider the following two dynamic regression modelsmodel 1

Consider the following two dynamic regression models: Model 1 yt = αyt-1 + βxt + t Model 2 yt =γxt1-φL +t1-θL where L is the lag operator and α, β, γ, φ, and θ are parameters. Assume that t ∼ N(0, σ2) (not necessarily th ...

• 13,132 Experts

## Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

### WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

### Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

### Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

### Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

### Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro