What is the next term in the sequence below 1, 3, 5, 8, 11, 15, 19, 24

How many distinct zeroes does the function <img src="https://tex.z-dn.net/?f=f%28x%29%3D%282x%2B1%29%28x%2B1%29%285x-4%29%282x%2

irina [24]

It has 3 zeroes which are

$\frac{-1}{2}, -1, \frac{4}{5}$

Hope this helped!

~Just a girl in love with Shawn Mendes

6 0

3 years ago

A fellow-student calculates a 99% confidence interval for a mean and gets (0.020,0.045). She says that there is a 99% chance tha

Kitty [74]

Answer:

No. Once the confidence interval is calculated, the probability that it contains the true mean is either 1 or 0. So then is not appropiate says that the confidence level is a chance. The best conclusion for this case would be:

We have 99% confidence that the true mean for the variable of interest on this case is between (0.02; 0.045)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the mean and the sample deviation we can use the following formulas:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (2)

$s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}$ (3)

After apply the procedure we got that the interval is (0.02; 0.045) and we need to analyze if the following conclusion is right or no:

She says that there is a 99% chance that the true mean is between 0.020 and 0.045. Is she right? Why or why not?

The best answer for this case would be:

No. Once the confidence interval is calculated, the probability that it contains the true mean is either 1 or 0. So then is not appropiate says that the confidence level is a chance. The best conclusion for this case would be:

We have 99% confidence that the true mean for the variable of interest on this case is between (0.02; 0.045)

5 0

4 years ago

[NEED AN ANSWER NOW] Hannah spins a spinner once and then randomly selects a marble from a bag. A representation of the spinner

e-lub [12.9K]

Hannah's answer is accurate

5 0

4 years ago

Read 2 more answers

Eva is 29 years old and has 2 children, ages 3 and 5. She makes $48,500 a year. Eva decides to buy a $400,000 10-year term pol

nirvana33 [79]

I believe it's A. <span>Eva would have been better off selecting the 20-year term policy.
Unde current circumtances, 10-year term policy wouldn't guarantee thesafety of the kids because even after the policy ends, Eva's kids still haven't entered the age where they could find their own income (they would be 12, 13, and 15).
If Eva decided to add another 10 year despite the extra charge, The kids will be covered until they enter the productive age.</span>

8 0

4 years ago

Read 2 more answers

Find derivatives f(x)=x+1/x²+1

andrew-mc [135]

Answer:

-2/x^3+1 or <em>negative two divided by x cubed plus one</em>

3 0

3 years ago