Mathematics, 27.12.2020 15:30, deezzzy
A study tested whether significant social activities outside the house in young children affected their probability of later developing the white blood cell disease acute lymphoblastic leukemia (ALL). They compared 1000 children with ALL to 6000 children without ALL. Of the ALL kids, 700 had significant social activity outside the home when younger. Of the non-ALL kids, 5000 had significant social activity outside the home.
Required:
a. What percentage of children with ALL have significant social activity outside the home when younger?
b. What is the sample odds ratio for significant social activity outside the home when younger, comparing the groups with and without ALL?
c. What is a 95% confidence interval for the population odds ratio for significant social activity outside the home when younger, comparing the groups with and without ALL?
d. Does the 95% confidence interval from part c. indicate that the amount of social activity is related to ALL? Why or why not?
e. Test whether significant social activities outside the house in young children affected their probability of later developing ALL, using the significance level of 0.05. Show the hypotheses, test statistic, p-value, and the conclusion.
Answers: 1
Mathematics, 21.06.2019 18:30, llolo8
Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?
Answers: 1
Mathematics, 21.06.2019 23:00, Hannahrose911
Someone answer this asap for gabriella uses the current exchange rate to write the function, h(x), where x is the number of u. s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a. gabriella averages 7.5 u. s. dollars for every 100 euros. b. gabriella averages 100 u. s. dollars for every 25 euros. c. gabriella can exchange 75 u. s. dollars for 100 euros. d. gabriella can exchange 100 u. s. dollars for 75 euros.
Answers: 1
A study tested whether significant social activities outside the house in young children affected th...
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