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A researcher investigated the relationship between family income and savings. Using data from 15 families, the computed r between income and savings was found to be 0.76. Is the computed r significant at 5% ? Can we conclude that the relationship really exists? ANSWER Но: На: Computed Value: Tabular value: Decision: Summary:

A researcher investigated the relationship between family income and savings. Using data from 15 families, the computed r between income and savings was found to be 0.76. Is the computed r significant at 5% ? Can we conclude that the relationship really exists? ANSWER Но: На: Computed Value: Tabular value: Decision: Summary:

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter8: Areas Of Polygons And Circles
Section8.4: Cicumference And Area Of A Cicle
Problem 46E: A tabletop is semicircular when its three congruent drop-leaves are used. By how much has the tables...
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A researcher investigated the relationship between family income and savings. Using data from 15 families, the computed r between income and savings was found to be 0.76. Is the computed r significant at 5% ? Can we conclude that the relationship really exists? ANSWER Но: На: Computed Value: Tabular value: Decision: Summary:
Transcribed Image Text:A researcher investigated the relationship between family income and savings. Using data from 15 families, the computed r between income and savings was found to be 0.76. Is the computed r significant at 5% ? Can we conclude that the relationship really exists? ANSWER Но: На: Computed Value: Tabular value: Decision: Summary:
Level of Significance of a One-Tailed or Directional Test Ho: p 5 0 or H: p 20 a = 0.025 a = 0.1 a = 0.05 a = 0.01 a = 0.005 a = 0.0005 Level of Significance of a Two-Tailed or Nondirectional Test Ho: p = 0 a = 0.02 df a = 0.2 a = 0.1 a = 0.05 a = 0.01 a = 0.001 0.9511 0.9877 0.9969 0.9995 0.9999 0.9999 0.8000 0.9000 0.9500 0.9800 0.9900 0.9990 3 0.6870 0.8054 0.8783 0.9343 0.9587 0.9911 4 0.6084 0.7293 0.8114 0.8822 0.9172 0.9741 5 0.5509 0.6694 0.7545 0.8329 0.8745 0.9509 0.5067 0.6215 0.7067 0.7887 0.8343 0.9249 0.4716 0.5822 0.6664 0.7977 0.8983 0.8721 0.7498 8 0.4428 0.5494 0.6319 0.7155 0.7646 0.4187 0.5214 0.6021 0.6851 0.7348 0.8470 10 0.3981 0.4973 0.5760 0.6581 0.7079 0.8233 11 0.3802 0.4762 0.5529 0.6339 0.6835 0.8010 12 0.3646 0.4575 0.5324 0.6120 0.6614 0.7800 0.5140 0.4973 13 0.3507 0.4409 0.5923 0.6411 0.7604 14 0.3383 0.4259 0.5742 0.6226 0.7419 15 0.3271 0.4124 0.4821 0.5577 0.6055 0.7247 16 0.3170 0.4000 0.4683 0.5425 0.5897 0.7084 17 0.3077 0.3887 0.4555 0.5285 0.5751 0.6932 0.5614 0.5487 18 0.2992 0.3783 0.4438 0.5155 0.6788 19 0.2914 0.3687 0.4329 0.5034 0.6652 20 0.2841 0.3598 0.4227 0.4921 0.5368 0.6524 21 0.2774 0.3515 0.4132 0.4815 0.5256 0.6402 22 0.2711 0.3438 0.4044 0.4716 0.5151 0.6287 0.3365 0.3297 0.6178 0.6074 23 0.2653 0.3961 0.4622 0.5052 0.3882 0.3809 24 0.2598 0.4534 0.4958 25 0.2546 0.3233 0.4451 0.4869 0.5974 30 0.2327 0.2960 0.3494 0.4093 0.4487 0.5541 35 0.2156 0.2746 0.3246 0.3810 0.4182 0.5189 40 0.2018 0.2573 0.3044 0.3578 0.3932 0.4896 50 0.1806 0.2306 0.2732 0.3218 0.3542 0.4432 60 0.1650 0.2108 0.2500 0.2948 0.3248 0.4079 0.2737 0.2565 70 0.1528 0.1954 0.2319 0.3017 0.3798 80 0.1430 0.1829 0.2172 0.2830 0.3568 90 0.1348 0.1726 0.2050 0.2422 0.2673 0.3375 100 0.1279 0.1638 0.1946 0.2301 0.2540 0.3211 150 0.1045 0.1339 0.1593 0.1886 0.2084 0.2643 300 0.0740 0.0948 0.1129 0.1338 0.1480 0.1884 500 0.0573 0.0735 0.0875 0.1038 0.1149 0.1464 1000 0.0405 0.0520 0.0619 0.0735 0.0813 0.1038
Transcribed Image Text:Level of Significance of a One-Tailed or Directional Test Ho: p 5 0 or H: p 20 a = 0.025 a = 0.1 a = 0.05 a = 0.01 a = 0.005 a = 0.0005 Level of Significance of a Two-Tailed or Nondirectional Test Ho: p = 0 a = 0.02 df a = 0.2 a = 0.1 a = 0.05 a = 0.01 a = 0.001 0.9511 0.9877 0.9969 0.9995 0.9999 0.9999 0.8000 0.9000 0.9500 0.9800 0.9900 0.9990 3 0.6870 0.8054 0.8783 0.9343 0.9587 0.9911 4 0.6084 0.7293 0.8114 0.8822 0.9172 0.9741 5 0.5509 0.6694 0.7545 0.8329 0.8745 0.9509 0.5067 0.6215 0.7067 0.7887 0.8343 0.9249 0.4716 0.5822 0.6664 0.7977 0.8983 0.8721 0.7498 8 0.4428 0.5494 0.6319 0.7155 0.7646 0.4187 0.5214 0.6021 0.6851 0.7348 0.8470 10 0.3981 0.4973 0.5760 0.6581 0.7079 0.8233 11 0.3802 0.4762 0.5529 0.6339 0.6835 0.8010 12 0.3646 0.4575 0.5324 0.6120 0.6614 0.7800 0.5140 0.4973 13 0.3507 0.4409 0.5923 0.6411 0.7604 14 0.3383 0.4259 0.5742 0.6226 0.7419 15 0.3271 0.4124 0.4821 0.5577 0.6055 0.7247 16 0.3170 0.4000 0.4683 0.5425 0.5897 0.7084 17 0.3077 0.3887 0.4555 0.5285 0.5751 0.6932 0.5614 0.5487 18 0.2992 0.3783 0.4438 0.5155 0.6788 19 0.2914 0.3687 0.4329 0.5034 0.6652 20 0.2841 0.3598 0.4227 0.4921 0.5368 0.6524 21 0.2774 0.3515 0.4132 0.4815 0.5256 0.6402 22 0.2711 0.3438 0.4044 0.4716 0.5151 0.6287 0.3365 0.3297 0.6178 0.6074 23 0.2653 0.3961 0.4622 0.5052 0.3882 0.3809 24 0.2598 0.4534 0.4958 25 0.2546 0.3233 0.4451 0.4869 0.5974 30 0.2327 0.2960 0.3494 0.4093 0.4487 0.5541 35 0.2156 0.2746 0.3246 0.3810 0.4182 0.5189 40 0.2018 0.2573 0.3044 0.3578 0.3932 0.4896 50 0.1806 0.2306 0.2732 0.3218 0.3542 0.4432 60 0.1650 0.2108 0.2500 0.2948 0.3248 0.4079 0.2737 0.2565 70 0.1528 0.1954 0.2319 0.3017 0.3798 80 0.1430 0.1829 0.2172 0.2830 0.3568 90 0.1348 0.1726 0.2050 0.2422 0.2673 0.3375 100 0.1279 0.1638 0.1946 0.2301 0.2540 0.3211 150 0.1045 0.1339 0.1593 0.1886 0.2084 0.2643 300 0.0740 0.0948 0.1129 0.1338 0.1480 0.1884 500 0.0573 0.0735 0.0875 0.1038 0.1149 0.1464 1000 0.0405 0.0520 0.0619 0.0735 0.0813 0.1038
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