In a recent year, a research organization found that 458 of 780 surveyed male Internet users use social networkingBy contrast 649 of 935 female internet users use social networking. Let any difference refer to subtracting male values from female values. Complete parts A through C below. Assume that any necessary assumptions and conditions are satisfied. A) a ) Find the proportions of male and female Internet users who said they use social networking The proportion of male Internet users who said they use social networking is? The proportion of female Internet users who said they use social networking is? B) What is the difference in proportions and Standard Error? C) Find a 99% confidence interval for the difference between these proportions 

The distribution of hemoglobin in grams per deciliter of blood if approximately N(14,1) in women and approximately N(16,1) in men. Use software or Table B to find the answers. A) What percent of women have more hemoglobin than the men's mean hemoglobin? B) What percent of men have less hemoglobin than the women's mean hemoglobin? C) What percent of men have more hemoglobin than the women's mean hemoglobin?

Given the data below; 320,332,339,343,345,348,351,352,364,376. a) find the mode.

A researcher is interested in determining if there is a relationship between handedness and penmanship.  To study this question, the researcher submitted samples from 100 students to penmanship experts.  The samples were rated to be of low, medium or high penmanship quality.  The observed frequencies were totaled according to left verses right handedness.     Penmanship Handedness low medium high Left 8 29 6 right 9 37 11   Which test is appropriate for this data? Why? Calculate row, column and table totals. State the null and alternative hypothesis. What is the degree of freedom? What is the value of the test statistic? What is the p-value? Are the data statistically significant at the 5% significance level? Do you recognize any flaws in this study

advocacy organization surveys 966 citizens of country A and 186 of them reported being born in another country. Similarly, 177 out of 1213 citizens of country B reported being foreign-born. The researchers want to test if the proportions of foreign born are the e in country B as in country A. Complete parts a through c below. What is the difference in the sample proportions, p, - p2, of foreign born residents from both countries? Assume p, is the proportion of foreign born residents from country A and p, is the proportion of foreign born residents from country B. difference in the sample proportions, p1-P2, is und to three decimal places as needed )

Please answer all parts.