13The length of time required to complete a college achievement test is found to be normally distributed with mean 83 minutes and standard deviation13 minutes. When should the test be terminated if we wish to allow sufficient time for 98% of the students to complete the test? (Round your answer to twodecimal places.)You may need to use the appropriate appendix table or technology to answer this question.

It is given that, the time required to complete a college achievement test follows a normal…

Answered: The length of time required to complete…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Similar questions

A group of migraine headache sufferers were tracked over their lifetimes with data taken every 10 years. The scatter plot shows the number of headaches per year versus age, in years. How would you estimate the number of headaches at age 100? Question 2 options: Draw a line of best fit and interpolate. Wait until a sufficient number of subjects have reached the age of 100. Draw a line of best fit and extrapolate. Use the number from age 80 and divide by 2.
Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how many defective lenses they made the time period of January 1 to March 31. The table gives the defect and the number of defects. Do the data support the notion that each defect type occurs in the same proportion? Test at the 5% level. Number of Defective Lenses Defect type Number of defects Scratch 1866 Right shaped - small 1935 Flaked 1979 Wrong axis 1921 Chamfer wrong 1864 Crazing, cracks 1991 Wrong shape 2004 Wrong PD 1895 Spots and bubbles 1917 Wrong height 1885 Right shape - big 1875 Lost in lab 1886 Spots/bubble - intern 1935 State the hypotheses.H0: Each defect type in the same proportion.Ha: Each defect type in the same proportion. Calculate the χ2 test statistic. Round expected values to two decimal places. Round χ2 to three decimal places.χ2 = Calculate the p-value. Round to four decimal places.p-value = State your decision.Since p-value 0.05,…
Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. tep 3 of 3: Draw a conclusion and interpret the decision.
Suppose that the average number of miles driven by a student is 15,000 and the standard error is 5000 miles. Find the interval of miles within which 99% of the drivers fall.
A sample of 30 commuters in the area of a certain city yielded the accompanying commute times, in minutes. Preliminary data analyses indicate that the t-interval procedu interval for the mean commute time of all commuters in the area of the city. (Note: x= 27.47 minutes and s 9.81 minutes.) Click here to view the commute times. Click here to view page 1 of the t-table. Click here to view page 2 of the t-table. an reasonably be applied. Find and interpret a 99% confidence ..... The 99% confidence interval is from minute(s) to minute(s). (Round to one decimal place as needed.) Commute times 22 28 33 26 42 29 27 36 25 14 47 39 32 15 18 11 21 17 30 26 15 21 28 17 29 46 18 36 36 40 Print Done Clear all Check answer View an example Get more help - Help me solve this NOV W 3,769 étv 23 280 MacBook Air DII F11 F12 吕口 888 F10 • F7 F8 F9 F5 F6 F4 esc F2 F3 F1 & %23 %24 dele 7 8 9- 2 4. E R Y. 会 w/
A May 2011 Gallup Poll found that many Americans believe in ghosts and other supernatural phenomena. The poll was based on telephone responses from randomly selected adults. The table shows the number of people who expressed belief in various phenomena. Please finish the relative frequency table below, and please show your answers in decimals 2 decimal places. Phenomenon Frequency Relative Frequency Psychic Healing 207 ESP 379 Ghosts 103 Astrology 431 Channeling 603
The histogram displays the number of 2008 births among U.S. women ages 10 to 50 . Each bin represents an interval of two years, and the height of each bin represents the frequency with which the data fall within that interval. A histogram for the number of births by mother’s age for 2008. Height of 62 for ages 14 to 16, height of 202 for ages 16 to 18, height of 369 for ages 18 to 20, height of 415 for ages 20 to 22, height of 441 for ages 22 to 24, height of 470 for ages 24 to 26, height of 487 for ages 26 to 28, height of 460 for ages 28 to 30, height of 403 for ages 30 to 32, height of 326 for ages 32 to 34, height of 252 for ages 34 to 36, height of 177 for ages 36 to 38, height of 99 for ages 38 to 40, height of 46 for ages 40 to 42, height of 17 for ages 42 to 44, and height of 4 for ages 44 to 46. Use the provided histogram to answer questions about the number of births for each age group. How many births occurred among women over the age of 38 ? number of births:What percentage…
In a psychology class, 40 students have a mean score of 89.5 on a test. Then 24 more students take the test and their mean score is 78.3.What is the mean score of all of these students together? Round to one decimal place.
The results of a recent study show that the proportion of people in the western United States who use seat belts when riding in a car or truckis under 84%. You want to support this claim.
A report states that the mean household income last year for a certain rural county was $55,300 and the median was $62,800. If a histogram were constructed for the incomes of all households in the county, would you expect it to be skewed to the right, skewed to the left, or approximately symmetric? Answer is Blank 1 ( don't hand writing solution)

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