### Statistical difference in driving speeds

Assignment Help Basic Statistics
##### Reference no: EM1394574

A 150 - 300 word response to the following:

A research firm tracks the average highway speed on 30 drivers driving home on Day 1. For the next 10 days, the drivers are given two cups of coffee one hour before the drive home. On the 10th day, the average highway speed is measured again. Does this study involve dependent or independent samples? You are interested in knowing if there is a statistical difference in driving speeds between Day 1 and Day 10. Which statistical test would be appropriate? Why?

### Write a Review

#### Find the sample size in order to obtain p estimate

How large sample should be selected in order to obtain p estimate with a bound of 0.08 on the error of estimation.

#### Determining the traffic light patterns

A study is conducted to determine if the traffic light patterns at a busy intersection need to be adjusted to help the flow of traffic. Data on the volume of traffic and the traffic patterns during different times of day are recorded.

#### Theoretical distribution of sample means

How does your sample compare to this theoretical distribution of sample means and what are the mean, variance, and standard deviation of the observations in your sample?

#### Difference between paramaeter and statistics

Critically the difference between Paramaeter and Statistics and Critically discuss the concept of operationalize? What are focus groups

#### Utilizing binominal experiment for probability

Utilizing a binominal experiment, that is each trail can be reduced to two outcomes, construct a binomial distribution.

#### Probability that lot will not be shipped

He randomly selects a sample of 10 items of the procduct from a large lot ready to be shipped. He (given that) the true proportion of perfect condition items is only 80% what is the probability that the lot will not be shipped?

#### Interpretation of simple linear regression

Suppose you are given a grant to run a controlled experiment. Explain how you would structure the experiment in order to estimate the casual effect of hours on sat.

#### Identifying a significant positive correlation

A researcher conducts some research in which they identify a significant positive correlation (r =0.42) between the number of children a person has and their life satisfaction. Which of the following is it inappropriate to conclude from this resea..

#### General public through publication and media coverage

Imagine that these results are disseminated to the general public through publication and media coverage. Write about one possible harmful consequence that these conclusions could have in the "everyday" world.

#### Analyze the regression and draw the scatter plot

Analyze the Regression and draw the scatter plot for results of the Hsp90 affinity and Her-2 degradation studies.

#### Probability that the average score of the 36 golfers

The average score of all pro golfers for a particular course has a mean of 70 and a standard deviation of 3.0. Assume 36 golfers played the course today. Find the probability that the average score of the 36 golfers exceeded 71.

#### Estimating value of infectivitypathogenicity and virulence

Using your knowledge of infectious disease epidemiology, quantify the pattern of disease X in this group, i.e., what are the infectivity, pathogenicity, and virulence of disease X? 