You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 43 business days, the mean closing price of a certain stock was $106.86. Assume the population standard deviation is $9.75. The 90% confidence interval is (O (Round to two decimal places as needed.)

Q: The number of housing foreclosures in 2008 was 3.98 million, up 81% over 2007. How many foreclosures…

A: Number of housing foreclosure in 2008 = 3.98 MillionWe need to find that how many foreclosure were…

Q: f 4/9 of a 3rd-grade class are boys, what is the boy co girl ratio in this class?

A:

Q: What percentage of the variation of income is explained by education? Do not use decimal place,…

A: The question is about regressionIntroduction :Coefficient of determination :This value indicates the…

Q: what percent is 80 of 25?

A: We can find the answer as below.

Q: Name On Your Own 3. A road sign is posted showing a road has a 10% grade, meaning the ratio of…

A: The answer is given below:

Q: For your research project you will apply surveys to your classmates, if you know that the generation…

A: It is given that a researcher wants to apply the surveys to his classmates. He wants to generate…

Q: * = (5, 4, 3, 2, 1) %3D What is r2?

A: x2 is second element from left.

Q: Carol bought sunscreen with a spf 30 label. The label claims it block about 97% of the sun's uv…

A: Carol bought sunscreen = spf 30 Now label claims :  It blocks 97% uv rays We have to calculate claim…

Q: a recent jacksonville daily news headline stated that "lyme disease cases quadruple in nc" this…

A: When a quantity 'quadruples', it means that it has increased by a factor of 4. In other words, the…

Q: I am confused still. I understand how the 2.33 was obtained but why is the percentage used 0.99

A: Let X denote the lengths of pregnancies in a small rural village are normally distributed with a…

Q: 9. 23d = 2,392 %3D

A: Here we have given  23d = 2392 Now we need to obtain the value of d By division algorithm we know…

Q: b. During a recent infestation by beetles, 2/3's of the ash trees in a local park were destroyed. If…

A: Let total number of trees originally present in the park = x Number of trees destroyed = 2x3 Then,…

Q: A building being designed will have fixed windows. Including the frame, the windows are 2 ft wide…

A: 30. GIven, dimensions of window is 2ft. × 6ft. Dimensions of wall is 78ft 6 in. × 12ft 2in. allowed…

Q: what is 95%CI of percentage ?  p=94/100,  n=200

A: Formula for CICI = p̂ + z(np^​(1−p^​)​​)wherep̂ = sample proportion = 94/100 = 0.94z = critical…

Q: How to convert percentage to ratio?

A: In this question we have to explain how to convert the percentage in fraction form.

Q: sum X-Y 2 Xa 12,8,11,9 Y= 13,5,217

A: Given : X = 12, 8, 11,9 Y = 13,5, 2, 17

Q: A container ship left port last week carrying some goods. Today, it stopped in another port to…

A:

Q: A container ship left port last week carrying some goods that weighed a total of 262,700 tons.…

A: To find: Percentage decrease in weight.

Q: store sells 1 smartwatch for every 8 smartphones. How can you use ratios to compare these…

A: From the given information we use ratios to compare quantity.

Q: Is 0.999 ... = 1? If not, explain why not. If yes, justify your response.

A: Given  0.999=1

Q: Use r=-0.00012097 A papyrus scroll from ancient Egypt was written 4,800 years ago. To the nearest…

A: Given r=-0.00012097 (a) Given that the age of papyrus scroll is t=4800 years. Thus, the equation is…

Q: Absolute Freq=12, 8, 10 then  Cumulative Freq=40% , x , 100%

A: Given:   Absolute Freq (f) Cumulative Freq   12 40%   8 x   10 100% Total 30

Q: Total Parenteral Nutrition (TPN) is ordered for a 31 year old male patient is 5 ft 5 in tall and…

A: Total Daily Energy Requirement (TDER) for a Patient on TPN: Detailed AnalysisTotal Parenteral…

Q: During the first half of the year, 686 patients were admitted to the cardiovascular care unit. Of…

A: From the provided information, Number of patients who were admitted to the cardiovascular during…

Q: 60% of what number is 1/3? What percent of 4/11 is 2/11?

A:

Q: at percent of 200 is 8

A: n = 200 r = 80

Q: 923 is what percentage of 1816 ? work the problem

A: This question can be solved using the concept of percentage.

Q: Civilian Employment = 157722 Unemployment = 6270 Not in Labor Force = 99333 Working-Age…

A: Given Working-Age population =263,325 Civilian Employment =157,722 Employment population ratio =?

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.