Nickie

Most popular questions and responses by Nickie
1. Statistics

A population has a mean of   30 and a standard deviation of   5. a. If 5 points were added to every score in the population, what would be the new values for the mean and standard deviation? b. If every score in the population were multiplied by 3 what

asked on January 26, 2013
2. Algebra II

Solve the logarithmic equation. Round to the nearest ten-thousandth if necessary. log 8x^3=4 Can someone walk me through this?

asked on December 13, 2017
3. Algebra II

leiana_chung Write (8a^-3)^-2/3 in simplest form. So far I have this. = (8^-2/3)(a^3(-2/3)) =(8^-2/3)(a^2) =((2^3)^-2/3)(a^2) =(2^-2)(a^2) And this is where I am stuck, can someone explain how to do the rest of the steps?

asked on January 14, 2018
4. Algebra II

Solve In(5x+7) = 8. Round to the nearest thousandth. Can someone walk me through this?

asked on December 13, 2017
5. Algebra II

Subtract (2)/(4+sqrt6) - (2)/(4-sqrt6). Can someone explain how to do this to me?

asked on January 25, 2018
6. Algebra II

Write the equation in logarithmic form. n^4/3=m Can someone explain how to do this?

asked on December 15, 2017
7. statistic

A multiple-choice test has 48 questions, each with four response choices. If a student is simply guessing at the answers, a. What is the probability of guessing correctly for any question? b. On average, how many questions would a student get correct for

asked on January 27, 2013
8. Algebra II

Use natural logarithms to solve the equation.Round to the nearest thousandth. 5e^2x+11=30 Can someone explain it to me? So far, I got. e^2x+11=6 2x+11=In 6

asked on December 13, 2017
9. statistic

A roulette wheel has alternating red and black numbered slots into one of which the ball finally stops to determine the winner. If a gambler always bets on black to win, what is the probability of winning at least 24 times in a series of 36 spins? (Note

asked on January 27, 2013
10. STAT

Do you view a chocolate bar as delicious or as fattening? Your attitude may depend on your gender. In a study of American college students, Rozin, Bauer, and Catanese (2003) examined the importance of food as a source of pleasure versus concerns about food

asked on February 10, 2013
11. statistic

Over the past 10 years, the local school district has measured physical fitness for all high school freshmen. During that time, the average score on a treadmill endurance task has been μ  19.8 minutes with a standard deviation of   7.2 minutes.

asked on January 27, 2013
12. stat.

A sample consists of the following n  6 scores: 2, 7, 4, 6, 4, and 7. a. Compute the mean and standard deviation for the sample. b. Find the z-score for each score in the sample. c. Transform the original sample into a new sample with a mean of M  50 and

asked on January 27, 2013
13. statistic

In a population of exam scores, a score of X  48 corresponds to z1.00 and a score of X  36 corresponds to z  –0.50. Find the mean and standard deviation for the population. (Hint: Sketch the distribution and locate the two scores on your sketch.) A

asked on January 26, 2013
14. Stat.

A trick coin has been weighted so that heads occurs with a probability of p  2 3, and p(tails)  1 3. If you toss this coin 72 times, a. How many heads would you expect to get on average? b. What is the probability of getting more than 50 heads? c.

asked on January 27, 2013
15. Math

If the ratio of girls to boys on the swim team is 2:3, which of these shows the possible number of girls to boys: A. 20 girls, 35 boys B. 24 girls, 36 boys

asked on September 22, 2010
16. Algebra II

What is the solution of the equation? 1+sqrt(3x+3) = sqrt(7x+2)

asked on January 25, 2018
17. Stat.

A national health organization predicts that 20% of American adults will get the flu this season. If a sample of 100 adults is selected from the population, a. What is the probability that at least 25 of the people will be diagnosed with the flu? (Be

asked on January 27, 2013
18. Math

Jorge's current hourly wage for working at Denti Smiles is \$12.00. Jorge was told that at the beginning of next moth, his new hourly wage will be an increase of 6% of his current hourly wage. What will be Jorge's new hourly wage? If someone could explain

asked on February 26, 2018
19. Calculus

Find the area of the shaded region given two points and the function y=cosx. Here's a figure (page 4 figure 7) math.upenn.edu/~deturck/m103/rogawski/chap6odd.pdf

asked on May 2, 2011
20. Chemistry

Aldol condensation of formic acid will create?

asked on July 2, 2017
21. STAT

Numerous studies have found that males report higher self-esteem than females, especially for adolescents (Kling, Hyde, Showers, & Buswell, 1999). Typical results show a mean self-esteem score of M  39.0 with SS  60.2 for a sample of n  10 male

asked on February 10, 2013
22. statistic

1. A distribution has a standard deviation of   12. Find the z-score for each of the following locations in the distribution. a. Above the mean by 3 points. b. Above the mean by 12 points. c. Below the mean by 24 points. d. Below the mean by 18 points.

asked on January 26, 2013
23. STAT

Functional foods are those containing nutritional supplements in addition to natural nutrients. Examples include orange juice with calcium and eggs with omega-3. Kolodinsky, et al. (2008) examined attitudes toward functional foods for college students. For

asked on February 10, 2013
24. math

Write the equation for the following situation: In one U.S. town, the annual consumption, s, of sugar (in kg per person) can be estimated by adding 30 to half the years, t, since 1975. Then graph the equation and use the graph to determine the sugar

asked on May 26, 2011
25. ~*~Algebra!*~

How do you use possible symmetry to determine whether the graph is the graph of an even function, an odd function, of a function that is neither even or odd?

asked on September 1, 2007
26. social studies

i need help with my math test

asked on April 3, 2009
1. Algebra II

Ok, so I tried to work it out myself. I think I have to rationalize the denominator for each fraction and then subtract those two answers.

posted on January 25, 2018
2. Algebra II

I think the next step is this =(1/2^2)(a^2) =(1/4)(a^2) But I do need help with this now.

posted on January 14, 2018
3. Algebra II

Thank you, but it's an equation dealing with natural logarithms.

posted on December 13, 2017
4. Algebra II

Thank you, but can you tell me what happened to the 8? Did you divide it by 10000?

posted on December 13, 2017
5. Statistics

A distribution has a standard deviation of   12. Find the z-score for each of the following locations in the distribution. a. Above the mean by 3 points. b. Above the mean by 12 points. c. Below the mean by 24 points. d. Below the mean by 18 points. For

posted on January 26, 2013