Question

A police officer is concerned about speeds on a certain section of Interstate 95. The data...

A police officer is concerned about speeds on a certain section of Interstate 95. The data accompanying this exercise show the speeds of 40 cars on a Saturday afternoon.

Highway Speed: 73 68 67 74 74 70 68 73 65 69 67 63 66 64 67 65 70 64 63 61 62 63 63 66 64 62 65 62 70 62 66 64 67 61 69 66 61 70 65 61

a. The speed limit on this portion of Interstate 95 is 65 mph. Specify the competing hypotheses in order to determine if the average speed is greater than the speed limit.

  • H0: μ = 65; HA: μ ≠ 65

  • H0: μ ≥ 65; HA: μ < 65

  • H0: μ ≤ 65; HA: μ > 65

b-1. Calculate the value of the test statistic. (Round your answer to 3 decimal places.)

b-2. Find the p-value.

  • 0.05  p-value < 0.10
  • 0.01  p-value < 0.020
  • p-value  0.10
  • p-value < 0.01

  • 0.020 p-value < 0.05

c. At α = 0.01, are the officer’s concerns warranted?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Kuya heard that oldest children tend to be more miserable about life than their youngest siblings...
Kuya heard that oldest children tend to be more miserable about life than their youngest siblings (not taking into consideration the number of siblings in between). Kuya gathered data from 33 families and measured their scores on a misery scale. The lower the score, the more miserable the person tends to be. MISERY SCALE SCORES Oldest Youngest 62 62 80 67 70 62 56 66 86 71 79 63 68 64 67 64 62 73 74 71 68 70 69...
A randomly selected sample of college basketball players has the following heights in inches. 65, 63,...
A randomly selected sample of college basketball players has the following heights in inches. 65, 63, 67, 67, 67, 70, 63, 65, 62, 66, 70, 62, 68, 67, 69, 67, 61, 68, 67, 67, 64, 69, 67, 62, 63, 65, 63, 65, 71, 62, 64, 61 Compute a 95% confidence interval for the population mean height of college basketball players based on this sample and fill in the blanks appropriately. ___ < μ < ___ (Keep 3 decimal places)
Refer to the accompanying data set and construct a 95​% confidence interval estimate of the mean...
Refer to the accompanying data set and construct a 95​% confidence interval estimate of the mean pulse rate of adult​ females; then do the same for adult males. Compare the results. Males    Females 81           82 72           94 52           57 59           66 51           54 62           80 52           77 74           85 51           89 62           57 73           35 61           64 62           87 80           74 80           79 63           62 63           67 97           76 43           60 85           65 72           86 66           85 73           69 72          ...
data on the heights of 37 randomly selected female engineering students at UH: 62 64 61...
data on the heights of 37 randomly selected female engineering students at UH: 62 64 61 67 65 68 61 65 60 65 64 63 59 68 64 66 68 69 65 67 62 66 68 67 66 65 69 65 69 65 67 67 65 63 64 67 65 We found that the sample mean and sample standard deviation for this sample data are 65.16 inches and 2.54 inches, respectively. Do you find sufficient evidence in the sample data...
Use ? to approximate σ. Use a 5% level of significance. Data: 69 62 75 66...
Use ? to approximate σ. Use a 5% level of significance. Data: 69 62 75 66 68 57 61 84 61 77 62 71 68 69 79 76 87 78 73 89 81 73 64 65 73 69 57 79 78 80 79 81 73 74 84 83 82 85 86 77 72 79 59 64 65 82 64 70 83 89 69 73 84 76 79 81 80 74 77 66 68 77 79 78 77
Kuya is relocating to China to manage a local branch of world news broadcasting station. He...
Kuya is relocating to China to manage a local branch of world news broadcasting station. He needs to decide on which mobile phone providers he should select based on a sample data of monthly charges from various subscribers. He came to you with the data to determine the provider with the lowest charges, on the average. Which provider would you advise Kuya to select? Mobile Unicom Telecom 62 60 62 55 71 58 69 64 68 58 65 57 56...
A high-school student has scored the following marks in a series of tests administered over 10...
A high-school student has scored the following marks in a series of tests administered over 10 weeks in mathematics and 2 science subjects, Physics and Chemistry. The school management is interested to know if there is any correlation between his performance in Mathematics and the sciences. Mathematics 78 74 68 85 57 67 73 61 70 66 Physics 73 69 60 81 62 63 75 64 63 59 Chemistry 71 72 63 79 67 60 71 68 69 63 Required:...
1)What would be the level of measurement for the quantity of Funko Pops owned by the...
1)What would be the level of measurement for the quantity of Funko Pops owned by the people in a statistics class? a) Ordinal b) Nominal c) Interval d) Ratio 2) Which sampling method was used if a researcher studying the annual income of students went classroom to classroom during the 11:00 AM period and asked to randomly speak to 3 students in each room? a) Stratified Sampling b) Convenience Sampling c) Cluster Sampling d) Systematic Sampling 3) the height (in...
Using the empirical rule, 95% of female heights should be between what two values? Either show...
Using the empirical rule, 95% of female heights should be between what two values? Either show work or explain how your answer was calculated. Height (inches) Gender 61 M 64 F 65 F 65 F 65 F 67 F 67 F 67 F 68 M 68 F 68 M 69 F 69 M 69 F 69 F 69 M 70 M 70 F 70 F 70 F 71 M 71 M 71 M 72 F 72 F 72 M 72...
How strongly do physical characteristics of sisters and brothers correlate? Here are data on the heights...
How strongly do physical characteristics of sisters and brothers correlate? Here are data on the heights (in inches) of 12 adult pairs: Brother 71 68 66 67 70 71 70 73 72 65 66 70   Sister 69 64 65 63 65 62 65 64 66 59 62 64 a. Use your calculator or software to find the correlation and the equation of the least-squares line for predicting sister’s height from brother’s height. Make a scatterplot of the data, and add...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT
Active Questions
  • 1. The ascending dose schedule of ropinirole (REQUIP) in the treatment of Parkinson's disease is: •...
    asked 3 minutes ago
  • Av-Y6 Company operates three service departments, administration, maintenance, and personnel and two production departments, assembly and...
    asked 4 minutes ago
  • Two long straight wires are parallel and 8.4 cm apart. They are to carry equal currents...
    asked 5 minutes ago
  • You deposit $5,000 into an account at the end of year 0. You deposit $5,000 every...
    asked 5 minutes ago
  • It's a Macroeconomics question. Kazumi is taking three courses this semester and wants to maximize her...
    asked 11 minutes ago
  • Carver Corporation uses the FIFO method in its process costing system. The Assembly Department started the...
    asked 11 minutes ago
  • The half-life of 235U, an alpha emitter, is 7.1×108 yr. Part A Calculate the number of...
    asked 14 minutes ago
  • Av-Y6 Company operates three service departments, administration, maintenance, and personnel and two production departments, assembly and...
    asked 14 minutes ago
  • A student is given 10V battery and 3 resistors. R1= 200ohm R2=300ohm R3= 400ohm a) Assume...
    asked 18 minutes ago
  • Particle Mass (g/mol) 01e 0.00054858 11H 1.00782 42He 4.00260 Part A The sun produces energy via...
    asked 19 minutes ago
  • N2 -> NH3:   A. ammonification;   B. denitrification;   C. nitrification;   D. nitrogen fixation;   E. assimilation.
    asked 20 minutes ago
  • Kinston Limited is considering investing in new equipment that will cost 126000 dollars and will last...
    asked 20 minutes ago