The erythrocyte stage that marks the beginning of hemoglobinization is called:

Provide an appropriate response.A study was designed to investigate the effects of two variables – (1) a student’s level of mathematical anxiety and (2) teaching method – on a student’s achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 260 with a standard deviation of 40 on a standardized test. Assuming a bell-shaped distribution, where would approximately 95% of the students score?

Provide an appropriate response.Given the following five-number summary, find the interquartile range (IQR).2.9, 5.7, 10.0, 13.2, 21.1.

Provide an appropriate response.Given the following five-number summary, find the interquartile range (IQR). 29, 37, 50, 66, 94

Provide an appropriate response.Given the equation of a regression line is = -4.5x- 2.4, what is the best predicted value for y given x=2.3?

The following double-bar graph illustrates the revenue for a company for the four quarters of the year for two different years. Use the graph to answer the question.What was the revenue for the second quarter of Year 1?

Provide an appropriate response.Many firms use on-the-job training to teach their employees new software. Suppose you work in the personnel department of a firm that just finished training a group of its employees in new software, and you have been requested to review the performance of one of the trainees on the final test that was given to all trainees. The mean and standard deviation of the test scores are 71 and 3, respectively, and the distribution of scores is mound-shaped and symmetric. Suppose the trainee in question received a score of 64. Compute the trainee’s z-score.

Provide an appropriate response.Parking at a large university has become a very big problem. University administrators are interested in determining the average parking time (e.g. the time it takes a student to find a parking spot) of its students. An administrator inconspicuously followed 210 students and carefully recorded their parking times. Identify the sample of interest to the university administration.

Provide an appropriate response.For the stem-and-leaf plot below, what are the maximum and minimum entries? 2 3 6 6 6 7 8 9 0 1 1 2 3 4 4 5 6 6 7 7 7 8 8 9 9 9 0 1 1 2 3 4 4 5 5 6 6 6 7 8 8 9 9 0 4

Provide an appropriate response.Find the z-score for the value 89, when the mean is 59 and the standard deviation is 1.