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Calculate the standard deviation for the following sample, and show your work. Use the formula of your choice. Use the empty cells to facilitate your calculations.
x x2
44
60
64
78
118
80
Ten asthmatics were asked to compare the effect of salbutamol and fenoterol sprays in relieving their asthma attacks. Assume that salbutamol and fenoterol are equal in terms of effectiveness and side effects in all people
Both SAT and ACT scores are normally distributed. What is the probability that a randomly selected high school senior's score on the mathematics part of the SAT will be more than 630?
Find the mean for the random variable X, the number of students who work full time in sample of size 16. Please round your answer to two decimal places.
let x have an exponential distribution with mean sigma.a find the first quartile q1b how far is the first quartile
please help the question. thank youa survey organization wants to take an srs in order to estimate the proportion of
An office manager wishes to estimate the mean time required to handle customer complaints. A sample of 38 complaints shows a mean time of 28.7 minutes with a standard deviation of 12 minutes.
How do research questions frame studies? What type of wording would lead to a qualitative study? A quantitative one?
Prepare a frequency distribution from data given below that describes how long it took a person to drive to work in work week.
the population mean annual salary for rns is 63400. a random sample of 32 rns is selected from this population. assume
The average age of the students in the sample was 23 with a standard deviation of 3.5: a) Formulate the hypotheses for this problem.
a random sample of 81 credit sales in a department store showed an average sale of 68.00. from past data it is known
the manufacturer of a new toothpaste claims that the new product helps whiten teeth. sixty subjects were randomly
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