Use the standard normal table to find the​ z-score that corresponds to the cumulative area 0.2843.If the area is not in the​ table, use the entry closest to the area. If the area is halfway between two​ entries, use the​ z-score halfway between the corresponding​ z-scores.

Use the TI-84 calculator to find the z-score for which the area to its left is 0.27. ROund the answer to two decimal places. The z-score for the given area is

The Ahmadi Corporation wants to increase the productivity of its line workers. Four different programs have been suggested to help increase productivity. Twenty employees, making up a sample, have been randomly assigned to one of the four programs and their output for a day's work has been recorded. You are given the results below. At 95% confidence, conduct the ANOVA test to determine whether there is a significant difference in the mean output under the four programs. Program A Program B Program C Program D 150 150 185 175 130 120 120 135 180 160 145 110 Part of the ANOVA table is shown below. Source of Variation Sum of Squares 8,750 Between Groups Within Groups 16,350 Total 220 190 180 175 d.f. 19 150 120 130 175 Mean Square

Find the interval of z-values associated with each area. a. The middle 75% of the data. b. The top 5% of the data

Use the standard normal table to find the​ z-score that corresponds to the cumulative area 0.0072. If the area is not in the​ table, use the entry closest to the area. If the area is halfway between two​ entries, use the​ z-score halfway between the corresponding​ z-scores. Click to view page 1 of the standard normal table. LOADING... Click to view page 2 of the standard normal table. LOADING...       z=enter your response here ​(Type an integer or decimal rounded to three decimal places as​ needed.)

Use the TI-84 calculator to find the z-score for which the area to its left Is 0.85. Round the answer to two decimal places.

Please underline answers!

Find the area in a t-distribution below  -2.3 if the sample has size n=8.Round your answer to three decimal places.area =

movie ratings of one star through five stars are what level of measurements?

Find the z-scores for which 80% of the distribution's area lies between -z and z. Click to view page 1 of the table. Click to view page 2 of the table. The Z-scores are (Use a comma to separate answers as needed. Round to two decimal places as needed.) C