Mathematics, 30.03.2020 20:38 ciarrap552
Complete parts (a) through (c) below.
(a) Determine the critical value(s) for a right-tailed test of a population mean at the alpha = 0.10 level of significance with 20 degrees of freedom.
(b) Determine the critical value(s) for a left-tailed test of a population mean at the alpha = 0.05 level of significance based on a sample size of n=10.
(c) Determine the critical value(s) for a two-tailed test of a population mean at the alpha=0.01 level of significance based on a sample size of n=11.
Answers: 1
Mathematics, 21.06.2019 16:50, lunamoon1
The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60
Answers: 1
Mathematics, 21.06.2019 21:50, zymikaa00
Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?
Answers: 1
Mathematics, 21.06.2019 22:00, jladinosolarsee
If tan2a=cot(a+60), find the value of a, where 2a is an acute angle
Answers: 1
Complete parts (a) through (c) below.
(a) Determine the critical value(s) for a right-t...
(a) Determine the critical value(s) for a right-t...
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