4) ListenSuppose a normal distribution has 50% of its area falling to the left of x = 30, and 25% of its area falling to the right of x = 38. The mode of the distribution is located at[blank].What best completes the sentence?Enter your answer as a decimal rounded to the nearest tenth, te this: 42.5- PreviousMacBook AirDDDIIF9F8吕0F7F6F5

Given that, a normal distribution has 50% of its area falling to the left of z=30, and 25% of its…

Answered: ) Listen Suppose a normal distribution…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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HOTSPOT LABEL The times (in seconds) of 8 runners for the 100-yard dash are recorded and used to determine the following calculations. Mean: 11.8 Median: 12.2 CO Mode: 12.5 Range: 3.2 The timekeeper had difficulties with the stopwatch and did not start the time until the runners had been running for 1.5 seconds. What would these calcula- tions be if this 1.5 seconds were added to each runner's 100-yard dash time? . Press each hotspot. Label the corresponding number below with the requested value. ▶ C «» Press to hear a reminder or hint for this problem. IQR: 2.4 100 All Charge
If A = 0.5, find the P(X = 0). Use the editor to format your answer Question 3 In a random sample of 74 people, 38 are classified as "successful" a. Determine the sample proportion, p, of successful people. b. If the population proportion is 0.80, determine he standard error of the proportion. Use the editor to format your answer
lecture(12.2): A statistic class is made up of 28 students online and 21 students in person. What proportion of the class is learning online?. Round your answer to 2 decimal places
The accompanying table contains data on the weight, in grams, of a sample of 50 tea bags produced during an eight-hour shift. Complete parts (a) through (d). Click the icon to view the data table. (Round to two decimal places as needed.) Find the p-value. p-value = .819 (F State the conclusi Do not reject H b. Construct a 90 The 90% confider (Round to four de Interpret the 90% More Info Tea Bag Weight (in grams) 5.65 5.45 5.42 5.41 5.53 5.34 5.54 5.46 5.53 5.59 5.42 5.51 5.55 5.54 5.61 5.56 5.47 5.44 5.49 5.39 5.46 5.63 5.53 5.32 5.68 5.29 5.49 5.76 5.56 5.41 5.57 5.59 5.52 5.33 5.49 5.54 5.61 5.44 5.45 5.24 5.56 5.63 5.49 5.58 5.68 5.43 5.49 5.57 5.58 5.35 I X
A running coach wants to know if participating in weekly running clubs significantly improves the time to run a mile. The running coach collects mean mile times for 42 runners who participate in weekly running clubs with 54 runners who do not run in clubs. The running coach measures times in January and June of the same year. All times are in seconds, and the runners all started with mile times between 8 minutes (480 seconds) and 9 minutes (540 seconds). Here are the results: (table) The running coach investigates if runners in a running club improve times more than runners not in a club. The running coach conducts a hypothesis test for the difference in sample mean change (“Running Club” minus “Not in a Club”). Here are the results: T-value = 2.7027, p-value = 0.0043, DF = 74 95% Confidence Interval (0.5254, 3.4746) Which of the following can the running coach conclude? Runners who participate in running clubs have a statistically significant change in running times when compared…
Save Suppose a random sample of n = 390 teenagers 13 to 17 years of age was asked if they use social media. Of those surveyed, 276 stated that they do use social media. Find the sample proportion of teenagers 13 to 17 years of age who use social media. The sample proportion is p= (Round to three decimal places as needed.)
ixd s 67 Dr 5. Find the percentage of data points that lie above z 1.03. Draw a picture to support your work.
Harper collected data on students who make appointments to see their advisor to see how many failed to show up. The student records were divided into two groups: male (group 1) and female (group 2). A 93% confidnece interval for pi – P2 was found to be as follows: (0.03, 0.09) Interpret the endpoints of this interval in the context of this problem. Do not use the word "difference" in your answer.
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/
Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 95% confidence that your error is no more than 0.03.
Number of Students 30 25 2 15 10 5 0 S 10 1 15 3 20 SAMSUNG 2.5 24 3 30 Grade 28 35 SUBMIT QUESTION 19 40 25 45 SAVE PROGRESS 50 55 SU
tration 20.28. The mean life of a sample of 10 electric bulbs was found to be 1456 hrs. With S.D.=423 hrs. A second sample of 17 bulbs chosen from a different batch showed a mean life of 1280- hrs with S.D=398 hrs. Is there a significant difference in the means of the two samples

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