Vitamin D, whether ingested as a dietary supplement or produced naturally when sunlight falls upon the skin, is essential for strong, healthy bones. The bone disease rickets was largely eliminated during the 1950s, but now there is concern that a generation of children more likely to watch TV or play computer games than spend time outdoors is at increased risk. A recent study of 3400 children randomly selected found 2020% of them deficient in vitamin D. Find a 98% confidence interval.

The 98% confidence interval for children deficient in vitamin D is (0.18, 0.22).

Explanation:

The (1 - α)% confidence interval for population proportion p is:

The information provided is:

Compute the critical value of z for 98% confidence interval as follows:

*Use a z-table for the value.

Compute the 98% confidence interval for the population proportion as follows:

Thus, the 98% confidence interval for children deficient in vitamin D is (0.18, 0.22).

no, because those are both different running competitions. while distance runners train their legs and their lungs to run long amounts of time, the sprinters are training their legs and their lungs to give all they have in the little amount of area they need to cover. the brain also plays a huge part in all of this.

the brain is the only thing in your body that sends messages to your body telling you to run. if you are a long distance runner and you have the mind set of a sprinter, you will not get anywhere. if you have a long distance mind set and you have to run 200m in 20 seconds then you will not make it in time.

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