Calculate: 1. The error in both sets of numbers by calculating the standard deviation. 2. The error in the product of the average x and average y. 3. The error in the value resulting by dividing the average x by the average y.

The Z-score tells you the number of standard deviations away from the mean (and X-μ can be used to find the in what direction) a data value is. The formula: Z Z-score for a single member of the population. Notice X - μ tells you the signed distance the data value (X) is from the mean. When you divide that by the size of each chunk (the standard deviation) you are measuring the distance in units of the size of the standard deviations (how many standard deviations fit in the distance between the data value and the mean) - which gives you the Z-score. σ The formula X = μ+Z. can be used to find the value in the population when given the Z-score (signed number of standard deviations). Notice that Z. tells you how far from the mean the data value is (since Z is the number of standard deviations and is the size of each standard deviation the product tells the total distance). So adding the distance from the mean to the mean gives the location along the number line for the data value. A…

Interpret the Z score for a student who scored an 91 on an exam that had a mean of 86 and a standard deviation of 5. One mean above the standard deviation One standard deviation above the mean One standard deviation below the mean One mean below the standard deviation

The scores on the Accuplacer test and High School GPAS are normally distributed. The Accuplacer test had a mean of 35 and a standard deviation of 9. High School GPAS had a mean of 2.8 and a standard deviation of 0.2. What high school GPA do you need to equal a score of 56 on the Accuplacer test? Give answer to two decimal placés. Check Answer

Length data for mussels collected at three different depths in dry lake. Calculate the mean and standard deviation for the mussels length data from each depth graph the men length and stander deviation for these data

Find the area of the shaded region. The graph to the right depicts IQ scores of​ adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15.   Click to view page 1 of the table. LOADING... Click to view page 2 of the table. LOADING...                 90         A graph with a bell-shaped curve, divided into 2 regions by a vertical line. The vertical line extends from the bell curve to the x-axis, and is located on the left half, under the curve. The region on the left of this line is shaded. The x-axis below the vertical line is labeled 90.       Question content area bottom Part 1 The area of the shaded region is enter your response here. ​(Round to four decimal places as​ needed.)

suppose that peices of a gallon of mill at various stores in one town have amean of $3.75 with a stabdard deviation of $0.09 use chebyshev theourm what is the minimum percentage of stires that sell a gallon of milk for between $3.57 and $3.93 round your answer tk ine decimal place