Fill in the blank. The represents the number of standard deviations an observation is from the mean. The represents the number of standard deviations an observation is from the mean.

Using a normal curve table, give the percentage of scores between the mean and a Z score of (a) 0.72, (b) 0.82, (c) 1.46, (d) 1.56, (e) - 0.72. Click here to view page 1 of the table. Click here to view page 2 of the table. Click here to view page 3 of the table. Click here to view page 4 of the table.

please fill in the blanks Similarly,__________  percent of all data points are within 1 standard deviation of the mean, __________ percent of all data points are within 2 standard deviations of the mean, and ________ percent are within 3 standard deviations of the mean.

Biology A biologist found the wingspans of a group of monary butterflies to be normally distributed with a mean of 52.2 mm and a standard deviation of 2.3 mm. What percent of the butterflies had a wingspana. less than 48.5 mm?

Final Grade An instructor grades exams, 50%; term paper, 20%; and final exam, 30%. A student had grades of 90, 91, and 96, respectively, for exams, term paper, and final exam. Find the student's final average. Use the weighted mean. The student's final average is 92.3

Find the mean, mode, and median

We have provided simple data sets for you to practice the basics of finding measures of variation. For each data set, determine the a. range. b. sample standard deviation. 4, 2, 0, 2, 2

Determine whether the statement is true or false. If it is false, rewrite it as a true statement. As the size of a sample increases, the mean of the distribution of sample means increases. Choose the correct answer below. O A. False. As the size of a sample increases, the mean of the distribution of sample means decreases. B. False. As the size of a sample increases, the mean of the distribution of sample means does not change. O C. True.

Give an example of a set of data that might be better represented by the median than the mean. Explain why.

Tia helps run her school's concession stand during football games. Over the course of the season, she tracks how many hamburgers and hotdogs are sold at each game and records the data in the table below. Hamburgers Hotdogs Sold Sold 30 8 28 25 29 25 18 13 22 23 20 Based on the data, which statement is true? O The mean number of hamburgers sold is less than the number of mean hotdogs sold. O The mean number of hamburgers sold is greater the mean number of hotdogs sold. O The median number of hamburgers sold is less than the median number of hotdogs sold. O The median number of hamburgers sold is greater the median number of hotdogs sold.