When constructing a confidence interval, as the confidence level required in estimating the mean increases, the width of the confidence interval?

The mean of twelve positive numbers is 3. When another number is added, the mean becomes 5. Find the thirteenth number.

A map has a scale of 1 cm to 3.2 km. The real-life distance between two towns is 64 km. What is the distance between the two towns on the map?

If you spend 7 hours a day sleeping what fraction of the day are you asleep?

Let x be a random variable that represents hemoglobin count (hc) in grams per 100 milliliters of whole blood. then x has a distribution that is approximately normal, with population mean of about 14 for healthy adult women.

Dan has $3.75. If he spends 1/3 of his money, how much will he have left? A. $1.25 B. $2.50 C. $7.50 D. $11.25

How to do angles like vertical and congruent

Which is longer, 4000 ft or 1 kilogram?

Mikey worked 8 hours on Wednesday, 6 hours on Thursday, and 7 hours on Friday. His gross pay for all three days was $187.95 A. $8.95 B. $8.98 C. $28.13 D. 65.63

Ray cupple bought a basic car costing 26,500, with options costing 725.00. There is a 6% sales rax in his state and a combined 50.00 license and registration fee. What was ray's total cost

theater technician charges a $200 flat fee and 5% of all profits from ticket sales per show. If the technician made $400.00 on a show, how much total profit was there from ticket sales?