B. G. Cosmos, a scientist, believes that the probability is

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2021-09-19
Answered

B. G. Cosmos, a scientist, believes that the probability is

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Neelam Wainwright

Answered 2021-09-20
Author has **102** answers

Let A be the event of aliens sending signals and R be the event that the signals are received. If the equipment detects signals, the probability that aliens are actually sending them is:

$P\left(A\mid R\right)=\frac{P\left(A\right)P\left(R\mid A\right)}{P\left(A\right)P\left(R\mid A\right)+P\left({A}^{\prime}\right)P\left(R\mid {A}^{\prime}\right)}=\frac{\frac{2}{5}\frac{3}{5}}{\frac{2}{5}\frac{3}{5}+\frac{3}{5}+\frac{1}{10}}=\frac{4}{5}$

asked 2021-03-08

In the equation above, j and k are constants. If the equation is true for all positive real values of x and y, what is the value of

A)3

B)4

C)5

D)6

asked 2021-08-16

Classify each of the studies as either descriptive or inferential. Explain your answers. In an article titled “Teaching and Assessing Information Literacy in a Geography Program” (Journal of Geography, Vol. 104, No. 1, pp. 17-23), Dr. M. Kimsey and S. Lynn Cameron reported results from an on-line assessment instrument given to senior geography students at one institution of higher learning. The results for level of performance of 22 senior geography majors in 2003 and 29 senior geography majors in 2004 are presented in the following table. Level of performance Met the standard: 36−48 items correct Passed at the advanced level: 41−48 items correct Failed: 0−35 items correct Percent in 2003 82%50%18% Percent in 2004 93%59%7%
Level of performance
Met the standard:
36−48 items correct

Passed at the advanced level: 41−48 items correct

Failed: 0−35 items correct

Percent in 2003

82%

50%

18%

Percent in 2004

93%

59%

7%

Passed at the advanced level: 41−48 items correct

Failed: 0−35 items correct

Percent in 2003

82%

50%

18%

Percent in 2004

93%

59%

7%

asked 2021-01-31

The function W defined by $W\left(\alpha \right)=1.9\alpha +2.3$ models the weight of a kitten, in ounces, that is a weeks old for $0\le \alpha \le 6$ . According to this model, what is the weight, in ounces, of a kitten that is 3 weeks old?

asked 2022-05-09

Identify each of the following statements as true or false in relation to confidence intervals (CIs). **Note: 0.5 marks will be taken away for each incorrect answer. The minimum score is 0.**

True | False | |
---|---|---|

A 95% CI is a numerical interval within which we are 95% confident that the true mean μ$\mu $ lies. | ||

A 95% CI is a numerical interval within which we are 95% confident that the sample mean x¯¯¯$\overline{x}$ lies. | ||

The true mean μ$\mu $ is always inside the corresponding confidence interval. | ||

For a sample size n=29$n=29$, the number of degrees of freedom is n=30$n=30$. | ||

If we repeat an experiment 100 times (with 100 different samples) and construct a 95% CI each time, then approximately 5 of those 100 CIs would not$not$ contain the true mean 𝜇. |

asked 2021-03-07

There is currently a global pandemic and many researchers and scientists are working assiduously to find a vaccine. Assume that Advanced Researcher, a company that is currently testing a few vaccines confirms an 80% chance of effectiveness of one of their vaccines.

Which probability distribution would you use to calculate the probability of success or failure of Advanced Researcher's vaccine if it were to be administered to people in society?

Which probability distribution would you use to calculate the probability of success or failure of Advanced Researcher's vaccine if it were to be administered to people in society?

asked 2021-10-04

Assume that all the distributions are normal, average is always taken to be the arithmetic mean xˉ or μ. A college Physical Education Department offered an Advanced First Air course last semester. The scores on the comprehensive final exam were normally distributed, and the the z scores for some of the students are shown below:
Robert, 1.11
Juan, 1.66
Susan, –1.9
Joel, 0.00
Jan, –0.65
Linda, 1.46
(c) Which of these students scored below the mean?

asked 2020-11-30

in Advanced Math

New Covid-19 patients arrive at the emergency room in Sultan Qaboos Hospital at a mean arrival rate of 18.8 patients per hour. Use Poisson distribution to compute the probability that at least three new patients will arrive at the emergency room within a 15-minute interval?

New Covid-19 patients arrive at the emergency room in Sultan Qaboos Hospital at a mean arrival rate of 18.8 patients per hour. Use Poisson distribution to compute the probability that at least three new patients will arrive at the emergency room within a 15-minute interval?