 # Get help with college statistics

Recent questions in College Statistics illusiia 2020-10-18 Answered

### A February 2007 Gallup Poll question asked, “In politics, as of today, do you consider yourself a Republican, a Democrat, or an Independent?” The possible responses were "Democrat". "Republican". “Independent”, “Other”, and “No Response”. What kind of variable to the response? beljuA 2020-10-18 Answered

### Give full and correct answer for this question, the chi-square test can be used: Select one: a. to make inference about a population mean. b. to test for survey error. c. to compare more than two independent proportions. d. for pairwise multiple comparisons of means. e. to test for difference in two variances. Yasmin 2020-10-18 Answered

### In statistics, random samples are used to make generalizations, or inferences, about a population. Give a full correct answer for this question its true or false? waigaK 2020-10-18 Answered

### Consider the following function. $$\displaystyle{f{{\left({x}\right)}}}={\frac{{{x}^{{{2}}}}}{{{x}^{{{2}}}-{81}}}}$$ a) To find the critucal numbers of f. b) To find the open interval on which function is increasing or decreasing. c) To identify the relative extremum. CheemnCatelvew 2020-10-18 Answered

### A population of values has a normal distribution with $$\displaystyle\mu={239.5}$$ and $$\displaystyle\sigma={32.7}$$. You intend to draw a random sample of size $$\displaystyle{n}={139}$$. Find the probability that a single randomly selected value is greater than 235.9. $$\displaystyle{P}{\left({X}{>}{235.9}\right)}=$$? Write your answers as numbers accurate to 4 decimal places. ossidianaZ 2020-10-18 Answered

### How to solve this confidence interval? Use the confidence interval to find the estimated margin of error. Then find the sample mean. A store manager says a confidence interval of (44.07, 80.97) when estimating the mean price (in dollars) for the population of textbooks. lwfrgin 2020-10-18 Answered

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