Scores of high school students on a national mathematics exam in Egypt were normally distributed with a mean of 86 and a standard deviation of 4. A) What is the probability that a randomly selected student will have a score of 80 or higher? B) If there were 97,680 students with scores higher than 91, how many students took the test? ___________________ _ (Remove all commas from your answer before submitting).
Fill in the blank(s) with correct word
Question 2
Which of the following statements are correct?
a. A confidence level expresses the degree of certainty that an interval will include the actual value of the population parameter.
b. A confidence level expresses the degree of certainty that a point estimate will include the actual value of the population parameter.
c. A confidence level expresses the degree of certainty that an interval will include the actual value of the sample statistic.
d. A confidence level expresses the degree of certainty that a point estimate will include the actual value of the sample statistic.
e. None of these statements is correct.
Cheetah at the Maasai Mara National Reserve
Flynn Effect IQ scores have risen across developed countries in recent decades. Source: Flynn (199
(A) X-ray technician performs a mammogram. (National Cancer Institute/Creator: Alan Hoofring ...
Tickets for the school play were $3 for students and $5 for all others. The box office sold 750 ...