14 out of 31 American adults responded "yes" when asked if they have ever voted for a candidate in a party different from which they identify with. What is the critical value for a 99% confidence interval? 2.977 2.326 2.75 2.576 2.744 3.012 2. The correct conclusion is that we conclude that the percent of all companies that have both Twitter and Facebook accounts IS LESSTHAN, IS DIFFRENET FROM OR OR IS MORETHAN 81,96,OR 0.2 3. A random sample of 40 commercials made since the year 2010 has an average of 24.9 seconds with a standard deviation of 9.6 seconds. What is the margin of error that corresponds to a 99% confidence interval for the average length of all commercials made since 2010? 4.11 4.1 3.91 4.106 None of the above 3B. The correct interpretation of the confidence interval is that we are 99% confident that the interval contains the length of commercials made since the year 2010. is what A similar study was conducted and found an interval of (21.5, 29.9). Can we claim the average length of all commercials made since 2010 is at least 21.9? Yes No
ANSWER ALL QUESTION
14 out of 31 American adults responded "yes" when asked if they have ever voted for a candidate in a party different from which they identify with. What is the critical value for a 99% confidence interval?
2.977
2.326
2.75
2.576
2.744
3.012
2. The correct conclusion is that we conclude that the percent of all companies that have both Twitter and Facebook accounts IS LESSTHAN, IS DIFFRENET FROM OR OR IS MORETHAN
81,96,OR 0.2
3. A random sample of 40 commercials made since the year 2010 has an average of 24.9 seconds with a standard deviation of 9.6 seconds. What is the margin of error that corresponds to a 99% confidence interval for the average length of all commercials made since 2010?
- 4.11
- 4.1
- 3.91
- 4.106
- None of the above
3B. The correct interpretation of the confidence interval is that we are 99% confident that the interval contains the
length of commercials made since the year 2010. is what
A similar study was conducted and found an interval of (21.5, 29.9). Can we claim the average length of all commercials made since 2010 is at least 21.9?
Yes
No
Not enough information to determine this
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