SPARTAMATH

A researcher reports that a test is "significant at level 0.05" This test will be significant at level 0.1? Explain. And at 0.01?

Jengibre is used by many as a dietary supplement. A manufacturer of supplements produces capsules that are advertised to contain at least 500 mg. of ground jengibre. A consumer advocacy group doubts this claim and tests the hypotheses

H0 μ: = 500 Ha: μ < 500

They take a random sample of 100 jengibre capsules produced by the manufacturer and compute the test statistics

z= mean-500/standar deviation/sqroot(100)

where is the mean amount of jengibre in the 100 capsules sampled. Based on other information, the advocacy group knows the value of . If the test statistic z has value 2.39, what can we conclude? Explain.

Experiments on learning in animals sometimes measure how long a laboratory rat takes to find its way through a maze. Suppose for one particular maze, the mean time is known to be 20 seconds with a standard deviation of 2 seconds. Suppose also that times for laboratory rats are Normally distributed. A researcher decides to test whether rats exposed to cigarette smoke take longer on average to complete the maze. She exposes 25 rats to cigarette smoke for 15 minutes and then records how long each takes to complete the maze. The mean time for these rats is 20.6 seconds. Are these results significant at the 0.05 level? Assume the researcher's rats can be considered an SRS from the population of all laboratory rats.

If I select a random sample of 20 items from a large batch in which there are 5% defective items, what is the chance I find at most two defectives in the sample?

Why USA second goal wasn't offside? The guy is definitely out of play http://tinypic.com/r/se1y6a/8

The black item in the right.

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http://www.blackgate.net/blog/wp-content/uploads/2...

Tiburon 2006

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The black item in the right.

Second derivative of sen(x)/(1-cos(x))

Formula for position of the object x(t)= 10t^(3/2) - 15t + 10

In which moment the instant velocity of the object is zero?

Implicit Derivative of sin^(x^2y+y^3+pix)=1/2

Derivative of xy^3=12+xy^2

Second derivative of y=sen(4x)

I was hanging out with this girl. I like her and she likes me but she came from a long frustrating relationship and insecure and wants to be friends by the moment. She told me that lets see if time unite us. From past experiences, my best bet would be to get out. What should I really do?

I'm just stuck mining some green rocks and cannot teleport. Anything new or interesting?

Tilted Ellipse

x^2-xy+y^2=4

Determine the points (x,y) at which

a) y is a minimum

b) x is a minimum

c) y is a maximum

d) x is a maximum

Find a unit vector in the direction of the given vector. Magnitude has a result of 1.

v = 6i - 2j

What does Mary Wollstonecraft means in her essay A Vindication of the Rights of Woman in this part " A lively writer, I cannot recollect his name, asks what business women turned of forty have to do in the world".

Seriously I really need help.

How do I find the inverse of sin, cos and tan. Please I would gladly appreciate.