Based on past data, it is known that about 20.5% of people smoke cigarettes. Suppose we take a sample of 100 people currently and find that only 12% smoke cigarettes. We want to see if there is evidence that the percentage of people who smoke cigarettes is decreasing. a. IfI wanted to control my margin of error and set it to 3% with 99% confidence, what sample size would I need to take instead of the 100? b. Using my original sample size of 100, what would be the 99% confidence interval for the population proportion? c. What are the null and alternative hypotheses? d. What is the critical value at 99% confidence? e. Calculate the test statistic (using the sample of 100). f. Find the p-value. 8. What conclusion would be made here at the 99% confidence level?

Q: what is a negative minus a positive number

A: Let's find.

Q: Find the general solution in terms of real functions. From the roots of the characteristic equation,…

A: Below given clear explanation

Q: PLEASE ANSWER LETTER "D"

A: Experiment has two outcomes only, they follow bernoulli distribution. If the same experiment is…

Q: Convert 1 over 8 to a decimal and tell whether it terminates or repeats

A: 1 over 8 means 1 divided by 8 So, dividing 1 by 8 , we get  18=0.125

Q: is 28 years. H vhole number.

A:

Q: dx

A:

Q: = 121, y = 181?, 0 sts v8

A:

Q: Name ALL of tl

A: To write the name all symmetry present in the given figure.

Q: 1. A crucial part of managing the spread of Covid-19 is testing people to see if they are infected…

A: a. The average infection rate can be calculated by dividing the confirmed cases of COVID-19…

Q: Please answer letter "d". Upvote will bbe given!

A: Sample Temp (x) Temp (y) 1 171 0.86 2 173 1.25 3 174 1.46 4 175 0.95 5 175 1.17 6 176…

Q: Find the logarithm log(36)=

A:

Q: Find X, 11.25x+925=45.50x

A:

Q: Subtract the hexadezimal number DAD from CAFE. Multiply these numbers.

A: DAD -CAFE = -BD51

Q: Find x. * 15 6,

A:

Q: Please answer D

A: (a) Given that the percentage of stadiums have just built in the past 20 years is, P=15%=15/100=0.15…

Q: Express 5.55 x 102 as an ordinary number.

A: We need to express given number in ordinary number.

Q: A= ュC= D=0 FIND AK

A: The given matrix is A=1201213 To find: Ak

Q: Answer number 9

A: Data given  9 balls =5(Red)+4(green) balls  Two balls selected

Q: Find P- hat and q- hat, n = 43 and X = 25 Round to three decimals

A: Answer: From the given data, n = 43 X = 25

Q: Solve SJI+x? x de

A: By the derivative method i have solved the problem

Q: answer just letter d  , please

A: Solution:

Q: Evaluate. xp

A:

Q: Solve. 20x+10 22(5) 20x X = = 39 Round to 4 decimal places.

A: Here we have to find the value of x.

Q: 8 4 ez*dxdy SS

A:

Q: cole to toolo orsdingies bolcovon AVOMA YAw-ono A 0 23. Based upon the results, does the professor…

A: Since p=0.002<alpha=0.05 Then variable are significant, now we check pair wise comparison then we…

Q: t=69.47-70 28.26 v57

A: t= 69.47-7028.2657   First solving the numerator part = 69.47-70 = - 0.53 Denominator part =…

Q: Solve. 反= -4

A:

Q: Number 284

A: Given revenue function: R(x)=-x2+8x

Q: Fle B= erp 16 terp 32 eap 2/2 16 eap 16

A:

Q: Find the distance between (-1.509, 1.15) and (-1.891, 0.996). What is the time traveled if 1 unit=…

A: By applying distance formula

Q: need to know how many antique coins he found?

A: From the above solution ,  Total coins = 180  Newer coins  = 135

Q: Number 18

A:

Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.