# Grantham University Statistics Discussion

Using the data set you collected in Week 1, excluding the super car outlier, you should have calculated the mean and standard deviation during Week 2 for price data. Along with finding a p and q from Week 3. Using this information, calculate two 95% confidence intervals. For the first interval you need to calculate a T-confidence interval for the sample population. You have the mean, standard deviation and the sample size, all you have left to find is the T-critical value and you can calculate the interval. For the second interval calculate a proportion confidence interval using the proportion of the number of cars that fall below the average. You have the p, q, and n, all that is left is calculating a Z-critical value,

Make

Don't use plagiarized sources. Get Your Custom Essay on
Grantham University Statistics Discussion
Just from \$13/Page

sure you include these values in your post, so your fellow classmates can use them to calculate their own confidence intervals. Once you calculate the confidence intervals you will need to interpret your interval and explain what this means in words.

Do the confidence intervals surprise you, knowing what you have learned about confidence intervals, proportions and normal distribution? Please the Week 5 Confidence T-Interval Mean and Unknown SD PDF and the Week 5 Confidence Interval Proportions PDF at the bottom of the discussion forum. This will give you a step by step example on how to help you calculate this using Excel. These PDFs will also help you in Tests&Quizzes tab.

Instructions: Your initial post should be at least 150 words.

WEEK 1 DATA:

STATISTICS

Make

19

,105

4

SUV

,800

4

SUV2020

274

SUV

2019

21

Ford

30

4

Car2020Toyota

4

Car2019

,650

4

Car2019Chevrolet

22296

2019Ford

22306

Truck2019Chevrolet

20236

QualitativeQualitativeQualitative

QuantitiveQuantitiveQuantitive

 Vehicle Type Year Model Price MPG (City) MPG (highway) Cylinders SUV 20 Ford Escape \$2 4 23 30 2020 Chevrolet Traverse \$ 29 18 27 Subaru Ascent \$31,995 21 Toyota 4runner \$35,310 17 6 Car 2018 Focus \$17,950 40 Prius \$24,200 58 53 Hyundai Sonata \$ 22 28 37 Impala \$28,020 Truck F-150 \$28,155 Silverado \$28,300 Qualitative Quantitive

Calculator

Total price:\$26
Our features

## Need a better grade? We've got you covered.

Order your essay today and save 20% with the discount code GOLDEN