Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. basic math
  3. the following data show spot speeds collected at a

The following data show spot speeds collected at a section of highway located in a...

70.2K

Verified Solution

Question

Basic Math

image

The following data show spot speeds collected at a section of highway located in a residential area before and after an increase in speed enforcement activities All speeds are in mi h After Before 27 41 31 31 27 40 Before 44 33 40 41 31 32 32 33 37 44 31 37 www 40 34 42 Before mean speed standard deviation 35 36 27 26 26 85th percentile speed percentage exceeding limit 35 22 22 25 26 37 After mean speed standard deviation 85th percentile speed 30 33 34 39 38 32 34 36 27 36 38 29 29 After 201 17 35 33 29 21 31 19 Using the student s t test determine whether there was a statistically significant difference in the average speeds at a significance level of a 0 05 the 95 percent confidence level OYes there was a statistically significant difference in the average speeds O No there was not a statistically significant difference in the average speeds 24 30 Also report for both the before and after cases the mean speed standard deviation 85th percentile speed and percentage of traffic exceeding the posted speed limit of 30 mi h Enter all speeds and standard deviations in mi h Round your 85th percentile speeds to at least the nearest Integer 16 20 33 28 33 mi h mi h mi h mi h mi h mi h

Answer & Explanation Solved by verified expert
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Zin AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

A pension fund manager is considering three mutual funds. The first is a stock fund, the...

Finance
Q

(a) Find the five-number summary, and (b) draw a box-and-whisker plot of the data.3 8...

Basic Math
Q

What is the center of the shape formed by the equation(x-3)/49 - (y+5)/25 = 1?(0,0)(-3,5)(3,-5)(9,25)(-9,...

Basic Math
Q

Use the Product Rule to differentiate the function.f(x) = x cos(x)Step 1To use the product...

Calculus
Q

Use the appropriate regression on the calculator to find the equation of the following functions...

Algebra
Q

Required information [The following information...

Accounting
Q

Problem 9-1A (Algo) Short-term notes payable transactions and entries LO P1 Skip to question ...

Accounting
Q

Jensen Company has cash proceeds from sales of $8,400. This amount includes $400 of sales...

Accounting
Q

Briefly explain the difference in the use of terminology of cost versus expense in accounting...

Accounting
Q

(MULTIPLE CHOICE) Marc, an analyst, believes that next year's earnings for Company A will be...

Finance
Q

Use the following information for questions 65-68: Seasons Construction is constructing an office...

Accounting
Q

SCF Ltd. is evaluating the following projects. Past practice has been to accept all projects...

Finance