In the 1992 presidential election, Alaska's 40 election districts averaged 1939 votes per district for President Clinton. The standard deviation was 550. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places. a. What is the distribution of X? X ~ N(40, 550) c. Find the probability that a randomly selected district had fewer than 1961 votes for President Clinton. ___________ d. Find the probability that a randomly selected district had between 1843 and 2007 votes for President Clinton. __________ e. Find the first quartile for votes for President Clinton. Round your answer to the nearest whole number. _________

Use the provided histogram to answer questions about the number of births for each age group. 1. How many births occurs among women over the age of 40? 2. What percentage of births occurred among women between the ages of 38 and 40?

A researcher wants to determine the percentage given below. Describe how the researcher should apply the five basic steps in a statistical study. (Assume that all the people in the poll answered truthfully.) the percentage of volunteers that volunteer over 10 hours per week Determine how to apply the first basic step in a statistical study in this situation. Choose the correct answer below. A. The population is all volunteers that volunteer over 10 hours per week The researcher wants to estimate the number in this population that volunteer over 10 hours per week OB. The population is all volunteers. The researcher wants to estimate the percentage in this population that volunteer over 10 hours per week. C. The population is all volunteers that do not volunteer over 10 hours per week. The researcher wants to estimate the number in this population that do not volunteer over 10 hours per week. D. The population is all volunteers. The researcher wants to estimate the percentage in this…

mg The total blood cholesterol level was measured for each of 20 adults. Here are the 20 measurements (in ). dL 129, 138, 154, 158, 170, 172, 176, 176, 184, 187, 189, 190, 199, 199, 201, 206, 213, 220, 227, 249 Send data to Excel Send data to calculator Frequency 8 6+ 4- 24 0 125 2 150 Answer the questions below. 4 175 200 Cholesterol level (in mg/dl) 8 (a) For these data, which measures of central tendency take more than one value? Choose all that apply. Check (b) Suppose that the measurement 249 (the largest measurement in the data set) were replaced by 348. Which measures of central tendency would be affected by the change? Choose all that apply. (c) Suppose that, starting with the original data set, the largest measurement were removed. Which measures of central tendency would be changed from those of the original data set? Choose all that apply. A 225 2 250 Mean Median Mode ONone of these measures Mean Median Mode ONone of these measures Mean Median Mode None of these measures X…