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Based on a poll, 67% of Internet users are more careful about personal information when using a public Wi-Fi hotspot. What is the probability that among four randomly selected Internet users, at least one is more careful about personal information when using a public Wi-Fi hotspot? How is the result affected by the additional information that the survey subjects volunteered to respond?
General
1 month ago
A survey of 1010 college seniors working towards an undergraduate degree was conducted. Each student was asked, "Are you planning or not planning to pursue a graduate degree?" Of the 1010 surveyed, 658 stated that they were planning to pursue a graduate degree. Construct and interpret a 98% confidence interval for the proportion of college seniors who are planning to pursue a graduate degree. Round to the nearest thousandth.
General
1 month ago
Show that if X is a geometric random variable with parameter p, thenE[1/X]= −p log(p)/(1−p)Hint: You will need to evaluate an expression of the formi=1➝[infinity]∑(ai/ i)To do so, writeai/ i=0➝a∫(xi−1) dx then interchange the sum and the integral.
General
1 month ago
A punch glass is in the shape of a hemisphere with a radius of 5 cm. If the punch is being poured into the glass so that the change in height of the punch is 1,5 cm/sec, at what rate is the exposed area of the punch changing when the height of the punch is 2 cm.
General
1 month ago
'Polonium-210 is a radioactive substance with a half-life of 138 days. If a nuclearfacility is handling 310 grams of polonium-210, then how many grams of polonium-210 will be left in 330 days. Round your answer 4 decimal places and remember touse labels.
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1 month ago
Bodens account has a principal of $500 and a simple interest rate of 3.3% . complete the double number line. HOW MUCH money will be in the account after 4 years, assuming Boden does not add or take out any money.
General
1 month ago
33 divided by 2 long division
General
1 month ago
f(4) if f(x) = 3x - 1
General
1 month ago
A polymer is manufactured in a batch chemical process. Viscosity measurements are normally made on each batch, and long experience with the process has indicated that the variability in the process is fairly stable with o 20. Fifteen batch viscosity measurements are given as follows: 724, 718, 776, 760, 745, 759, 795, 756, 742, 740, 761, 749, 739, 747, 742 A process change that involves switching the type of catalyst used in the process is made. Following the process change, eight batch viscosity measurements are taken: 735, 775, 729, 755, 783, 760, 738, 780 Assume that process variability is unaffected by the catalyst change. If the difference in mean batch viscosity is 10 or less, the manufacturer would like to detect it with a high probability. (a) Formulate and test an appropriate hypothesis using a 0.10. What are your conclusions? Find the P-value. (b) Find a 9096 confidence interval on the difference in mean batch viscosity resulting from the process change. (c) Compare the results of parts (a) and (b) and discuss your findings.
General
1 month ago
According to a past survey, 23% of Americans have hypertension. After a stringent regimen of diet and exercise, 75 people were then tested and 18 were found to have hypertension. Based on this sample, does diet and exercise reduce hypertension? Use a significance level of 0.05.a) yesb) no
General
1 month ago
For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 20 N acts on a certain object, the acceleration of the object is 4 /ms2. If the force is changed to 50 N, what will be the acceleration of the object?
General
1 month ago
A nutrition label states that there are 36g of carbonhydrates in each serving. This counts 12% of the daily value. How many grams of carbohydrates are recommended per day?Can you please show a good explanation like the problem on math on how you did it
General
1 month ago
WILL GIVE 100 POINTS1. In a music stadium, there are 18 seats in the first row and 21 seats in the second row. The number of seats in a row continues to increase by 3 with each additional row.(a) Write an explicit rule to model the sequence formed by the number of seats in each row. Show your work.(b) Use the rule to determine which row has 120 seats. Show your work.
General
1 month ago
The sailboat has 1 large sail and one small sail. The large sail is 24 feet tall. The base of the sail is 12 feet long. What is the area of the large sail?
General
1 month ago
The average price of homes sold in the U.S. in the past year was $220,000. A random sample of 81 homes sold this year showed a sample mean price of $210,000. It is known that the standard deviation of the population is $36,000. Using a 1% level of significance, test to determine if there has been a significant decrease in the average price homes. Use the p value approach. Make sure to show all parts of the test, including hypotheses, test statistic, decision rule, decision and conclusion.
General
1 month ago
Shelby bought a 2-ounce tube of blue paint. She used 2/3 ounce to paint the water, 3/5 ounce to paint the sky, and some to paint a flag. After that, she has 2/15 ounce left. How much paint did Shelby use to paint her flag?
General
1 month ago
I need help trying to get the value of the x angle, here's an image of it
General
1 month ago
Include ALL the steps (statements/reasons) by writing a paragraph proof.
General
1 month ago
Matthew scored a total of 168 points in basketball this season. He scored 147 of those in the regular season, and and the rest were scored in his only playoff game. What percent of his total points did he score in the playoff game?
General
1 month ago
A shipping company is loading cube shaped crates into a larger cube shaped container the smaller cubes have side lengths 21/2 feet,and the larger shipping container has side lengths of 10 feet. How many crates will fit in the largest shipping container?Explain your reasoning
General
1 month ago
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