Simplify the expression x2tx-x-5-xt7

1 answer:

4 0

$x*2tx-x-5-xt*7$ $\text{Expression}$

$\text{Apply Product Rule:} \ {x}^{a}{x}^{b}={x}^{a+b}
$

$x^2*2t-x-5-xt*7$

$2x^2t-x-5-xt*7
$ $\text{Regroup terms}$

$2x^2t-x-5-7xt
$ <span> $\text{Regroup terms}$ </span>

You might be interested in

What is the exercise 3-8?

wlad13 [49]

3-8 equals to -5 because if you stele a number line and count 8 points from three it will equal -5

5 0

3 years ago

A random sample of 102 full-grown lobsters had a mean weight of 16 ounces and a standard deviation of 3.4 ounces. Construct a 98

pshichka [43]

Answer:

The best point estimate for a confidence interval estimating the population μ is 16 ounces.

The 98 percent confidence interval for the population mean μ is between 15.21 ounces and 16.79 ounces.

Step-by-step explanation:

We have the standard deviation for the sample, so we use the t-distribution to solve this question.

The best point estimate for a confidence interval estimating the population μ is

The sample mean, so 16 ounces.

T interval

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 102 - 1 = 101

98% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 101 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.98}{2} = 0.99$ . So we have T = 2.36