A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 7% margin of error at a 95% confidence level, what sample size is needed? (Note: round your z-score to three decimal places.)

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A: A cable TV company has 3400 customers paying $90 each month. Suppose each $1 reduction in price…

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A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: i cannot see the solution please resend

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Q: what is x since it isn't what you wrote, i tried solving it myself but its not the right answer…

A: Note: After seeing the previous explanation we observe that the previous answer is correct, but the…

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A: A fair die is tossed 72,000 times. n=72000  Let X be the number of times that 4 comes up on the die.…

Q: Think I'm on the right path could I get help with finding both parts

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Q: can you try this question again and let me know, I got a different answer

A: To write the equation of logarithmic function that has been vertically stretched by , reflected in…

Q: 6)) Given the graph of f'(x) find the values of x where the curve y = f(x) has horizontal tangent…

A: (By bartleby rule, only questions from first part have been answered) The graph of f'x is shown…

Q: I don't understand why c1=0 and not c1=u0. Can you please explain it to me. Thank you

A: U(0,t)=u0, we can not use X(0)=u0. But when U(0,t)=0, then for U(x,t)= X(x)T(t),  U(0,t)=…

Q: Hi There, thank you for giving this a go! I tried inputting this answer, but it came back as being…

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Q: Hi, this is incorrect ?

A: To find a positive value of  such that the average value of  over the interval  is 20.

Q: I cannot see how the problem was done, it was hidden behind the box. Can it please be edited or…

A: To find an equation of the line passing through the two points 7, -3, 1 and -2, 1, 4 in, (a) vector…

Q: What about third one?

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Q: it is wrong, can you try doing it again?

A: We have to find the particular solution for the given differential equation.

Q: Can you please finish question 5,6,7and 8 I would like to compare with my results please explain…

A: Disclaimer: Since you have asked multiple questions, we will solve the first question for you. If…

Q: I keep getting stuck trying to solve this please help

A: Recall the following fact.

Q: It is not well explained i am confused

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Q: c question please clarify f

A: The 3 major central tendencies are: Mean Median Mode   Mean A measure of central…

Q: Part b is not completely right please check that and also part c is completely wrong. Please provide…

A: The given data of the risk of stroke, age, blood pressure, and smoker status for several individuals…

Q: It's wrong, can you re-solve it

A: Area of a triangle is given by,To find:The rate of base when altitude, h = 11.5 cm and area, A = 98…

Q: Another question that's really throwing  me off please help.

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Q: most of them were solved wrong

A: Topic - equation of line