In a recent year, the population of california was about 2.52 x 10^7 people. its land area is about 4.05 x 10^5 km^2. what was the average number of people per square kilometer? write your answer in scientific notation. i need

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

When rolling 26 sided number cube what are the chances some of the role will be seven

Apossible wavelength for the color blue is 0.000000492 meter. which of the following is a reasonable estimate for this wavelength for the color blue? a. 5 × 10-6 m b. 5 × 107 m c. 5 × 10-7 m d. 5 × 106 m