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Significant changes occur in the circulatory system as the pregnancy progresses  The cardiac output [answer1], the total blood volume [answer2], and the hemoglobin and hematocrit levels [answer3] . 

The nurse is describing to a pregnant woman how the embryo receives oxygenation. Which of the following is the correct response by the nurse?

A nurse is discussing physical aspects that may affect fertility with a couple who are trying to become pregnant. Which factors did the nurse mention that may affect the sperm quality in a male?  Untreated gonorrhea [answer1] Nightly use of hot tub [answer2] Varicocele [answer3] Impotence [answer4] Obesity [answer5] Substance abuse[answer6]

What is the minimum value of the data?

Going back to question #1, the sample covariance indicates that there is  ___________________ linear relationship between the two variables.

he numbers of hours worked (per week) by 500 statistics students are shown below. Number of hours Frequency 0–9 10 10–19 140 20–29 250 30–39 100 What is the relative frequency of students working 0–9 hours per week? Enter answer as decimal.

Consider a sample with data set with a variance of 90.25, what is the standard deviation?

Give the mean x̄ = 31 and standard deviation s = 4   Compute the z-score for 40 = ____    

Five observations taken for two variables follow. xi 6 11 15 21 27 yi 5 10 5 18 12 Compute the sample covariance.

The study of how organisms are distributed across space is referred to as __________.