He showed that students with ADHD differently on a visual search in various locations and to...
ANOVA, CHI-SQUARE AND NONPARAMETRIC TESTS Contingency tables: Expected frequencies Keira The following contingency table gives a summary of the data from 2000 trials of a visual experiment. Each of the trials was performed by either a colorblind participant or a non-colorblind participant. Each trial resulted in a "hit, a miss," a "alse alarm," or a "correct rejection. In the cells of the table are the respective observed frequencies, and three of the cells also have blanks. Fill in these blanks...
Conduct the hypothesis test and provide the test statistic, critical value and P-value, and state the conclusion A package of 100 candies are distributed with the following color percentages 13% red 20% ora ge, 15% yellow 12% br dlaimed. Use a 0.10 significance level. EEB Click the icon to view the color counts for the candy in the package Click here fo view the chi-square distribution table, 25% blue and 15% g een Use the given sa ple data to...
Consider the following competing hypotheses: He: Pxy = 0 НА: Рxy = 0 The sample consists of 18 observations and the sample correlation coefficient is 0.15. (You may find it useful to reference the t table.) a-1. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.) Test statistic a-2. Find the p-value 0.05 s p-value <0.10 0.02 s p-value <0.05 0.01 s p value <0.02 pvalue...
A poll of 2,142 randomly selected adults showed that 92% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (e). Test of p=0.91 vs p≠0.91 Sample X N Sample p 95% CI Z-Value P-Value 1 1970 2,142 0.919701 (0.908193,0.931210) 1.57 0.117 a. Is the...
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en Find the indicated probability using the standard normal distribution Plz< -1.28 or z> 128) Click here to view page 1 of the standard normal table. Click here to view page 2 of the standard normal table P(z< - 1.28 or z>1.28)=(Round to four decimal places as needed.) In a random sample of 18 people, the mean commute time to work was 31,1 minutes and the standard...
A restaurant estimates that about 11% of its adult patrons are vegetarians. However, a national organization says the number of adult vegetarians is at least 12%. Suppose that you sample n = 600 adults and the number who indicate they are vegetarian is x = 48. Find the test statistic and rejection region, using the α = 0.01 level of significance. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.) Given:...
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Chapter 12. Chi-Square Test Saved Help Save & Exit Su Check my w Given the following contingency table, conduct a test for Independence at the 5% significance level. (You may find It useful to reference the appropriate table: chi-square table or F table) Variable A points Variable B 36 35 31 51 eBook a. Choose the null and alternative hypotheses. Hint Ho: The two variables are independent.; HA: The two variables are dependent. O Ho: The...
At a certain hotel, guests have come from the following locations: Use Table 3. Category North America Asia Other TOTAL Proportion 60 30 10 100 Category North America Asia Other Frequency 238 107 45 a. Choose the appropriate alternative hypothesis at H0: p1 = 0.60, p2 = 0.30, and p3 = 0.10. All population proportions differ from their hypothesized values. At least one of the population proportions differs from...
Conduct the hypothesis test and provide the test statistic and the critical value and state the conclusion A person randomly selected 100 checks and recorded the cents portions of those checks. The table below lists those cents portions categorized according to the indicated values. Use a 0.10 significance level to test the claim that the four categories are equally likely. The person expected that many checks for whole dollar amounts would result in a disproportionately high frequency for the first...
To help schedule staffing and equipment needs, a large hospital uses a multiple regression model to predict its bed census' y, the number of beds occupied at the end of each day. Using hospital records from the most recent 22 days, a total of 4 independent variables are used to find the estimated regression model. Let BB2.B, denote the coefficients of the 4 variables in this model. A computer printout indicates that the total sum of squares (SST) associated with...