Thursday

July 31, 2014

July 31, 2014

Total # Posts: 22

**Statistics**

State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test these claims. < ¡Ü = ¡Ù ¡Ý > (a) There is an increase in the mean difference between posttest and pretest scores. Ho: ¦Ìd 0 Ha...

**Statistics**

Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.) Ha: ó1 > ó2, with n1 = 13, n2 = 8, and á = 0.025 F=

**Statistics**

Thanks for your help!

**Statistics**

Find the 99% confidence interval for the difference between two means based on this information about two samples. Assume independent samples from normal populations. (Use conservative degrees of freedom.) (Give your answers correct to two decimal places.) Sample Number Mean S...

**math**

what is the answer to this problem : there are 1.5 times more carp in the lake this year than last year. this year's carp population is 423. write an equation to determine how many trout are in the lake this year.

**Calculus (math)**

Write a formula for f^-1 (x) if f(x) = (x+5)/(3x-4) and state the domain of f-1

**math**

Solve using elimination method -7x+5y=-56;-21x-2y=-168

**physics**

The justice league is playing baseball with 5kg rockets. The flash's top speed is 300m/s and a home run requires a 180m run. The rockets accerlate at 1200m/s^2, Superman catches it 30m from home, and decelerates it with 2700N. Once he stops the rocket, he applies a 2700N f...

**math**

Mr. Browne bought six shirts at the same sale. They had been marked $31 each. How much did he save on the six shirts?

**math**

what is y=xsquared+2x-15 in factored form?

**chemistry**

Write the balanced equation and solubility product expression for the solubility equillibrium of Mn3(PO4)2: Ksp expression?

**Chemistry**

Acetic acid is a polar molecule and can form hydrogen bonds with molecules. Therefore, it has a high soulubility in water. Yet acetic acid is also soluble in benzene (C6H6), a nonpolar solvent that lacks the ability to form hydrogen bonds. A solution of 3.8g of CH2COOH in 80 g...

**math**

i need to know 1,000 x 340

**4th grade**

hi im a fourth grader can you help me i need to know 10 triangles and how to put them in colors ??????? i have now clue what to do

**4th grade**

sorry my spelling isnt that good

**4th grade**

the meaning of meadian it the number in the middle the range is the greater number +the least number

**government**

what is the correlation between a form of government and its economic system?

**Statistics**

oh wait...should use the 97.5 percentile to get the answer to the 2.5% top students?? because they wouldn't have negative z-scores, right?

**Statistics**

At one university, the students are given z-scores at the end of each semester instead of traditional GPA's. The mean and standard deviation of all the student' culmulative GPA's, on which the z-scores are based, are 2.7 and .5 respectively. i understand how to tra...

**math**

what is the value of 6 in 146027?

**Math**

There are four light switches in the room. They can be in either of two positions - on or off. How many possible ways can the four switches be arranged? What if there were eight switches?

**math**

120 km = 463 km ------------.... --------- 1cm(map) map distance (cm) Cross-multiply to get algebra equation. 120x =463 x = 463/120 = 3.858333333 (round off to 3.9 since 3.858 is closer to 3 9/10 than 3 8/10 - always round up from 5 or greater 3.8(58) x = 3.9 cm so ya I think ...

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