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2. One-Sample Sign Test a. What was the p-value for the one-sample sign test? b. Was...
A schoolteacher is concerned that her students watch more TV than the average American child. She reads that according to the American Academy of Pediatrics (AAP), the average American child watches 4 hours of TV per day (μ = 4.0 hours). She records the number of hours of TV each of her six students watch per day. The times (in hours) are 2.7, 5.5, 4.8, 2.7, 4.4, and 3.9. (a) Test the hypothesis that her students watch more TV than...
A schoolteacher is concerned that her students watch more TV than the average American child. She reads that according to the American Academy of Pediatrics (AAP), the average American child watches 4 hours of TV per day (μ = 4.0 hours). She records the number of hours of TV each of her six students watch per day. The times (in hours) are 3.8, 4.6, 2.9, 5.5, 4.4, and 2.8. (a) Test the hypothesis that her students watch more TV than...
Watching TV: In 2012, the General Social Survey asked a sample of 1330 people how much time they spent watching TV each day. The mean number of hours was 3.05 with a standard deviation of 2.70. A sociologist claims that people watch a mean of 3 hours of TV per day. Do the data provide sufficient evidence to conclude that the mean hours of TV watched per day is more than the claim? Use the a=0.10 level of significance and...
The calculated p-value for a One Sample Sign test is 0.246. Using the conventional value for p, the null hypothesis cannot be rejected. True False
Which Test those cases should use? A: one sample z-test B: one-sample t-test C: t-test for the difference between means for two related samples D: t-test for the difference between means for two independent samples with homogeneity of variance E: t-test for the difference between means for two independent samples with heterogeneity of variance F: a one sample z-test for proportions (or a chi-square goodness of fit) G: chi-square goodness of fit only (where a one sample z-test of proportions isn’t appropriate) H: a two-sample z-test...
1. In the regression equation, the value that gives the amount by which Y changes for one unit in X is called the (a) coefficient of correlation. (b) coefficient of determination. (c) slope. (d) intercept. 2. For any two categorical variables, X and Y, the best way to determine if they are related is to (a) calculate the correlation between X and Y. (b) draw a scatterplot of the X and Y values. (c) make a two-way table of the...
1. Testing: H0:p=0.55H0:p=0.55 H1:p<0.55H1:p<0.55 Your sample consists of 144 subjects, with 73 successes. Calculate the test statistic, rounded to 2 decimal places z= 2. A well-known brokerage firm executive claimed that at least 34 % of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that out of 125 randomly selected people, 38 of them said they are confident of meeting their goals. Suppose you are have the...
The One Sample 2 Test ESP A husband and wife claim that they have a special bond that allows them to communicate by ESP. To test this claim, an researcher puts the husband and wife in separate rooms. The husband is randomly shown one of colors: either blue, red, green, yellow or orange. He then is given 5 seconds to use his ESP to communicate the color to his wife. The wife then has to decide which of the 5...
please tell me if its a z test ke t test and why it is :)
thanks!
CHECK ANSWERS! You should use a Z test because of the large sample size 30 < and we know the mean and the standard deviation. 6. The Graded Naming Test (GNT) requires respondents to name objects in a set of 30 black-and-white drawings. The test is often used to detect brain damage in the UK. The test begins with easy words like kangaroo,...
Travana - 26. What is a warning sign for breast cancer? 2. A change in the skin (c.g. puckering) b. Hard area inside the breast c. Change in the size of the breast d. Pain that doesn't go away c. All of the above 27. What is a symptom of testicular cancer? a Swollen testicle b. Painless lump on or in the testicle c. Low back pain d Breast growth or soreness e. All of the above What is a...