Statistics question and answers for January 19, 2024
- Q In a mid size company the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell shaped and has a mean of...
- Q Solve the compound inequality and give your answer in interval notation 2 6x3 10 44 AND 1x 4 3x 14 4x
- Q GPAS at CCSU are normally distributed with a mean of 2 32 and a standard deviation of 0 53 Find the z score for a GPA of 3 28 00...
- Q Solve the compound inequality and give your answer in interval notation 5x2 8 OR 3x 4 5
- Q A manufacturer knows that their items have a lengths that are skewed right with a mean of 12 5 inches and standard deviation of 2 1 inches If 32 items...
- Q Engineers must consider the breadths of human heads when designing helmets The company researchers have determined that the population of potential clientele have head breadths that are normally distributed with...
- Q A certain component is critical to the operation of an electrical system and must be replaced immediately upon failure If the mean life of this type of component is 80...
- Q Solve the inequality and write your answer in interval notatio 12x 15 24 5x
- Q A manufacturer knows that their items have a normally distributed lifespan with a mean of 13 5 years and standard deviation of 2 4 years If 11 items are picked...
- Q Solve the inequality and write your answer in interval notation 10 6x 17x 12
- Q Solve for x 24x 432 Ox 18 0x 18 0x 18 Ox 18
- Q Match each scatterplot shown below with one of the four specified correlation coefficients O O O O CO 08 O O O O O a 0 08 b 0 95...
- Q Solve for c 12c 240 Oc 20 Oc 20 Oc 20 Oc 20
- Q If the correlation coefficient is negative this means O there is a strong correlation between the variables Othere is no correlation between the variables O the test statistic t can...
- Q A researcher wishes to examine the relationship between years of schooling completed and the number of pregnancies in young women Her research discovers a linear relationship and the least squares...
- Q The time spent studying for a test and the test scores are graphed below along with the best fit line 100 90 Exam score e points 80 70 60 50...
- Q Using your favorite statistics software package you generate a scatter plot with a regression equation and correlation coefficient The regression equation is reported as y 26 59x 70 48 and...
- Q Here is a bivariate data set in which you believe y to be the response variable y X 24 8 75 28 3 42 7 29 9 57 17 40...
- Q Suppose that you run a correlation and find the correlation coefficient is 0 281 and the 22 22 The centroid of your data was 6 6 15 5 regression equation...
- Q ariable X y 49 4 15 6 22 5 53 3 58 2 70 3 49 9 1 9 48 7 31 74 6 83 2 36 6 47 8...
- Q What type of model is the best choice for the data in the scatterplot below O Linear O Non linear
- Q Let represent the profit or loss for a certain company years after 1965 Based on the data shown below a statistician calculates a linear model 2 12x 6 84 X...
- Q You are researching the growth of a species of fish You gather a sample of fish and record the age in weeks of each fish and its mass in grams...
- Q The weight of a newborn animal is given by the formula W in grams and d is the number of days since hatching Which variable causes the other variable to...
- Q Which of the following is false O Correlation coefficient and the slope always have the same sign positive or negative O If the correlation coefficient is 1 then the slope...
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