# How do I access smartwork5?

April 20, 2021 Off By idswater

## How much does smartwork5 cost?

Buy new: \$89.99. In Stock. For the 2020 holiday season, returnable items shipped between October 1 and December 31 can be returned until Janu.

How do you change InQuizitive chapters?

In InQuizitive, click on the Create Custom InQuizitive Assignment button.Select the chapters you would like to be included in your custom assignment. Name your custom InQuizitive assignment, select the Student Sets you would like to be able to access the assignment, and click the Create Custom Assignment button.

### How do I register as an InQuizitive?

How do I register for InQuizitive?Enter a registration code. An InQuizitive registration code comes for free with new copies of select Norton textbooks.Make an online purchase. You can purchase access to InQuizitive online. Register via trial access. You can access InQuizitive for three weeks through trial access.

### What is the lowest confidence level?

The lowest value in the computed confidence interval is called the Lower Endpoint. The largest value in the computed confidence interval is called the Upper Endpoint. This is a proportion associated with ANY confidence interval. Most often confidence levels of 0.90, 0.95, 98, and 0.99 are used.

What does a 95% confidence level mean?

A 95% confidence interval is a range of values that you can be 95% certain contains the true mean of the population. This is not the same as a range that contains 95% of the values.

#### Is 90 confidence level acceptable?

With a 95 percent confidence interval, you have a 5 percent chance of being wrong. With a 90 percent confidence interval, you have a 10 percent chance of being wrong. A 99 percent confidence interval would be wider than a 95 percent confidence interval (for example, plus or minus 4.5 percent instead of 3.5 percent).

#### What is the confidence level for 95%?

This means that there is a 95% probability that the confidence interval will contain the true population mean. Thus, P( [sample mean] – margin of error …Confidence Intervals.Desired Confidence IntervalZ Score90% 95% 99%1.645 1.96 2.576

What is the margin of error for a 95% confidence interval?

Researchers commonly set it at 90%, 95% or 99%. (Do not confuse confidence level with confidence interval, which is just a synonym for margin of error.)…How to calculate margin of error.Desired confidence levelz-score85%1.4490%1.6595%1.9699%2.581 more row

## How do I calculate 95% confidence interval?

To compute the 95% confidence interval, start by computing the mean and standard error: M = (2 + 3 + 5 + 6 + 9)/5 = 5. σM = = 1.118. Z.95 can be found using the normal distribution calculator and specifying that the shaded area is 0.95 and indicating that you want the area to be between the cutoff points.

## How do you interpret a 95 confidence interval?

The correct interpretation of a 95% confidence interval is that “we are 95% confident that the population parameter is between X and X.”

What does 95% confidence mean in a 95% confidence interval?

A 95% confidence interval is a range of values that you can be 95% certain contains the true mean of the population. This is not the same as a range that contains 95% of the values. The 95% confidence interval defines a range of values that you can be 95% certain contains the population mean.

### What is the 95% confidence interval for the mean difference?

The 95% confidence interval on the difference between means extends from -4.267 to 0.267. The calculations are somewhat more complicated when the sample sizes are not equal.

### What does a 90 confidence interval mean?

Examples of a Confidence Interval A 90% confidence level, on the other hand, implies that we would expect 90% of the interval estimates to include the population parameter, and so forth.

Why is a 99 confidence interval wider?

For example, a 99% confidence interval will be wider than a 95% confidence interval because to be more confident that the true population value falls within the interval we will need to allow more potential values within the interval.

#### What is the z score for 99.9 confidence interval?

number of observations n = 40. mean X = 175. standard deviation s = 20….Calculating the Confidence Interval.Confidence IntervalZ95%1.96099%2.57699.5%2.80799.9%3.2913

#### How do you calculate a 90 confidence interval?

9:07Suggested clip · 109 seconds90% Confidence Interval – YouTubeYouTubeStart of suggested clipEnd of suggested clip

How do you find the margin of error for a 90 confidence interval?

Calculate the margin of error for a 90% confidence level:The critical value is 1.645 (see this video for the calculation)The standard deviation is 0.4 (from the question), but as this is a sample, we need the standard error for the mean. 1.645 * 0.013 = 0.021385.

## How do you find the Z value?

The formula for calculating a z-score is is z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation. As the formula shows, the z-score is simply the raw score minus the population mean, divided by the population standard deviation.

## How do you do confidence intervals?

There are four steps to constructing a confidence interval.Identify a sample statistic. Choose the statistic (e.g, sample mean, sample proportion) that you will use to estimate a population parameter.Select a confidence level. Find the margin of error. Specify the confidence interval.