A set of three scores consists of the values 2, 5, and 8.   Σ(X – 1)² = ?

The data represent the results for a test for a certain disease. Assume one individual from the group is randomly selected. Find the probability of getting someone who tested positive, given that he or she had the disease. The probability is approximately (Round to three decimal places as needed.) View an example @ 2 s W S X 3 дв command # Get more help 26 80 F3 E D A GA C a R F tv % 5 V T G The individual actually had the disease O Yes No 135 Positive Negative 13 VAG 810 MacBook Air 6 B Y & 7 H F7 U 25 127 N * 8 DII 1 M ( 9 K O 0 I H qqqqqqqqı L A F10 Clear all P > л. : ; { + [ = Check answer I command option 11 18 ? F12 1 } 1 delete

Compute the z-score for each of the six entertainment expenses. (Round z-score calculations to 2 decimal places.  Negative amounts should be indicated by a minus sign.)          z157      z132      z109      z145      z125      z139      I need the last three i answered te first three myself

Q. Consider the following data and calculate the values of the following expressions. Show each step. X₁ 3 5 7 11 13 15 14 Y₁ 2 4 6 10 12 i) ΣX ² =1 X₁ 9 8

What is P(C and Z)?

Which of the following can be assessed by a dependent T-Test? Group of answer choices the score means of two distinct group the score means of pre and post tests from same participants the score means of three distinct group

D Question 4 For a 100-point exam, a score of X = 65 is definitely above the median. 4 O True False

Solve.

Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values are results for scales of introversion and shyness. High positive scores on each scale indicate high introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected from 10 people as follows: Introversion 4 -7 -1 0 6 7 -4 -9 -5 8 Shyness 11 -7 -1 -3 0 7 -1 -8 -1 5 a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?