What are the possible integer products of 8, and what are the sums of each product?

The teacher select a sample of n =15 students. And he wanted to know if teaching a smaller class was more effective and students performed better, that means if $\mu >78$ and he obtaind a sample mean of $\bar X>83$ .

Based on this the correct system of hypothesis are:

Null hypothesis: $\mu =78$

Alternative hypothesis: $\mu >78$

And the best option for this case is:

a. H0: $\mu=78$ vs. H1: $\mu>78$ .

Step-by-step explanation:

For this case we have the following previous info given:

$\mu = 78$ represent the true mean

$\sigma =10$ represent the true deviation

The teacher select a sample of n =15 students. And he wanted to know if teaching a smaller class was more effective and students performed better, that means if $\mu >78$ and he obtaind a sample mean of $\bar X>83$ .

Based on this the correct system of hypothesis are:

Null hypothesis: $\mu =78$

Alternative hypothesis: $\mu >78$

And the best option for this case is:

a. H0: $\mu=78$ vs. H1: $\mu>78$ .

5 0

3 years ago

The projectile motion of an object can be modeled using s(t) = gt2 + v0t + s0, where g is the acceleration due to gravity, t is

GREYUIT [131]

So for projectile motion questions, we use the Cartesian equations.
Given that s(t) is the height of the projectile at an arbitrary time, t, we want the height of the projectile to equal to zero in order to find its flight time.

Let s(t) = 0.
$gt^{2} + V_0 t + s_0 = 0$
Now, the initial velocity of the projectile is given to be 19.6, and the initial height is 24.5.

Substitute those in to find:
$-4.9t^{2} + 19.6t + 24.5 = 0$

5 0

2 years ago

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