WILL MARK BRAINIEST TO WHOEVER ANSWERS FIRST ONLY 4 QUESTIONS

Holly is using her grades from all of the tests she has taken this year. It is in a
Stem and Leaf Plot.

What were Holly's grades? List them in numerical order.

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1. What was her lowest test score?
2. What was her highest test score?
3. What was her median grade?
4. What score represents the lower quartile?

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?