Solution:

Using standard normal table

\(z=1.74\)

This Right tailed test

\(p(z>1.74)\)

\(1-0.9591\)

\(=0.0409\) Correct optioan is 0.0409

asked 2021-11-05

For a test of \(\displaystyle{H}_{{{0}}}:\ {p}={0.5},\) the z test statistic equals 1.74. Find the p-value for \(\displaystyle{H}_{{{a}}}:\ {p}{>}{0.5}\).

a) 0.0446

b) 0.0409

c) 0.892

d) 0.9591

e) 0.0818

f) 0.9554

a) 0.0446

b) 0.0409

c) 0.892

d) 0.9591

e) 0.0818

f) 0.9554

asked 2021-11-06

Which of the following are assumptions for the Significance Test for the Proportion?

1) Data is Categorical.

2) Data is from a convenience sample.

3) \(\displaystyle{n}{p}_{{{0}}}\) and \(\displaystyle{\left({1}-{p}_{{{0}}}\right)}\) are both greater than 15

4) Data is Quantitative

5) Data is from a Normal Distribution

6) Data is from a random sample

7) \(\displaystyle\hat{{{n}{p}}}\) and \(\displaystyle{n}{\left({1}-\hat{{{p}}}\right)}\) are both greater than 15

1) Data is Categorical.

2) Data is from a convenience sample.

3) \(\displaystyle{n}{p}_{{{0}}}\) and \(\displaystyle{\left({1}-{p}_{{{0}}}\right)}\) are both greater than 15

4) Data is Quantitative

5) Data is from a Normal Distribution

6) Data is from a random sample

7) \(\displaystyle\hat{{{n}{p}}}\) and \(\displaystyle{n}{\left({1}-\hat{{{p}}}\right)}\) are both greater than 15

asked 2021-05-28

Find the margin of error for the given values of c,s, and n. c=0.95, s=2.2, n=64

asked 2021-11-19

Your math test scores are 68, 78, 90, and 91.

What is the lowest score you can earn on the next test and still achieve an average of at least 85?

Getting an Answer Solve your inequality to find the lowest score you can earn on the next test and still achieve an average of at least 85.

What score do you need to earn?

What is the lowest score you can earn on the next test and still achieve an average of at least 85?

Getting an Answer Solve your inequality to find the lowest score you can earn on the next test and still achieve an average of at least 85.

What score do you need to earn?

asked 2021-06-19

When two targets are presented close together in a rapid visual stream, the second target is often missed. Psychologists call this phenomenon the attentional blink (AB). A study published in Advances in Cognitive Psychology (July 2013) investigated whether simultaneous or preceding sounds could reduce AB. Twenty subjects were presented a rapid visual stream of symbols and letters on a computer screen and asked to identify the first and second letters (the targets). After several trials, the subject's AB magnitude was measured as the difference between the percentages of first target and second target letters correctly identified. Each subject performed the task under each of three conditions. In the Simultaneous condition, a sound (tone) was presented simultaneously with the second target; in the Alert condition, a sound was presented prior to the coming of the second target; and in the No-Tone condition, no sound was presented with the second target. Scatterplots of AB magnitude for each possible pair of conditions are shown below as well as the least squares line for each. a. Which pair of conditions produces the least squares line with the steepest estimated slope? b. Which pair of conditions produces the least squares line with the largest SSE? c. Which pair of conditions produces the least squares line with the smallest estímate of σ?

asked 2021-06-11

If the chi-square \((\chi 2)\) test statistic \(=73.7\) what is the p-value you would report? Use Table C.Remember to calculate the df first.

Group of answer choices

\(P>0.250\)

\(P=0.01\)

\(P<0.001\)

\(P<0.002\)

\(\begin{array}{|c|cc|}\hline & \text{Right-Tail Probability} \\ \hline df & 0.250 & 0.100 & 0.050 & 0.025 & 0.010 & 0.005 & 0.001 \\ \hline 1 & 1.32 & 2.71 & 3.84 & 5.02 & 6.63 & 7.88 & 10.83 \\ 2 & 2.77 & 4.61 & 5.99 & 7.38 & 9.21 & 10.60 & 13.82 \\ 3 & 4.11 & 6.25 & 7.81 & 9.35 & 11.34 & 12.84 & 16.27 \\ 4 & 5.39 & 7.78 & 9.49 & 11.14 & 13.28 & 14.86 & 18.47 \\ 5 & 6.63 & 9.24 & 11.07 & 12.83 & 15.09 & 16.75 & 20.52 \\ 6&7.84&10.64&12.59&14.45&16.81&18.55&22.46 \\ 7&9.04&12.02&14.07&16.01&18.48&20.28&24.32\\ 8&10.22&13.36&15.51&17.53&20.09&21.96&26.12 \\ 9&11.39&14.68&16.92&19.02&21.67&23.59&27.88 \\ 10&12.55&15.99&18.31&20.48&23.21&25.19&29.59 \\ 11&13.70&17.28&19.68&21.92&24.72&26.76&31.26 \\ 12&14.85&18.55&21.03&23.34&26.22&28.30&32.91 \\ 13&15.98&19.81&22.36 & 24.74 & 27.69 & 29.82 & 34.53 \\ 14 & 17.12 & 21.06 & 23.68 & 26.12 & 29.14 & 31.32 & 36.12 \\15 & 18.25 & 22.31 & 25.00 & 27.49 & 30.58 & 32.80 & 37.70 \\ 16 & 19.37 & 32.54 & 26.30 & 28.85 & 32.00 & 34.27 & 39.25 \\ 17 & 20.49 & 24.77 & 27.59 & 30.19 & 33.41 & 35.72 & 40.79 \\ 18 & 21.60 & 25.99 & 28.87 & 31.53 & 34.81 & 37.16 & 42.31 \\ 19 & 22.72 & 27.20 & 30.14 & 32.85 & 36.19 & 38.58 & 43.82 \\ 20 & 23.83 & 28.41 & 31.41 & 34.17 & 37.57 & 40.00 & 45.32 \\ \hline \end{array}\)