ability and Co XF33THomework| C:/Users/Annaw/Downloads/Variability%20and%20Confidence%20Interval%20WS.pdfRead aloudDIIF4LA420F5X PDF6.) If the mean annual salary for 20 randomly selected nurses is $39000, find the 90% confidence intervalfor the population mean salary if sigma is $1700.%5-+Variability and Confider XQ SearchF6A62Lof 2F7&7G If the mean annual sala x C 6.) If the8F8DELL)8F9prt sc9F10homeF110meansen

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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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If observations are paired, the appropriate t test depends on the intent of the investigator explain whether there is a concern about a mean difference or a correlation?
indicator for gender (=1 if male, =0 if female). Your data set has 200 observations. donation = 1.57 + 0.12age + 0.08age? – 0.43 gender + 0.07(gender * age), R? = 0.33 (0.15)* (0.67) (0.11) (0.01) (0.06) donation = 1.59 (0.68) 0.46 gender, R² = 0.30 (0.17) 1. Assuming homoscedastic errors, test the hypothesis that age affects charitable donations at the 5% level. 2. Interpret the coefficient on gender interacted with age. 3. How would you test that the difference in giving between men and women is independent of age? If you can run the test, run it. If you cannot, explain what you need.
Define Test a correlation for significance?
A coach collected data for the same group of runners for two weeks. The median distance run for Week 1 was 14.5 miles, with an IQR of 1.15. The median distance run for Week 2 was 16 miles, with an IQR of 1.5. Write a word or phrase from the box on the blanks to correctly compare the variability of data from Week 1 to Week 2. mean IQR closer to farther from The Week 2 data values tend to be their median than the Week 1 data values are to their median because Week 2 has a greater, The box plot shows ages of randomly sampled attendees at two different movies. nere to search DELL 近

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Avalanches can be a real problem for travelers in the western United States and Canada. Slab avalanches studied in Canada had an average thickness of u = 67 cm. A sample of 31 avalanches in the U.S. gave a sample mean of = 63.0 cm. It is known that o = 10.3 cm for this type of data. Use a 0.03 level of significance to test the claim that the mean slab thickness of avalanches in the United States is different from that in Canada. Use the P-Value Approach. What is the P-Value for this problem? O 0.0154 0.0150 0.0300 0.0308
Avalanches can be a real problem for travelers in the western United States and Canada. Slab avalanches studied in Canada had an average thickness of u = 67 cm. A sample of 31 avalanches in the U.S. gave a sample mean of = 63.0 cm. It is known that o = 10.3 cm for this type of data. Use a 0.03 level of significance to test the claim that the mean slab thickness of avalanches in the United States is different from that in Canada. Use the P-Value Approach. What are the hypotheses for this problem? А: Но и 3D 63.0 ст us На и + 63.0 ст B: Но и 63.0 ст С: Но и %3D 67 ст us HA и < 67 ст D: Ho u = 67 cm vs HA H# 67 cm B O A

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6.) If the mean annual salary for 20 randomly selected nurses is $39000, find the 90% confidence interval for the population mean salary if sigma is $1700.