Question

ryans classmates each calculated the mean time it takes to get ready for school reported by a sample of 100 participants. ryan created this histogram of the sample means. how many samples reported an average time to get ready between 0 min and 10 min? suggest a reasonable interval to estimate the population parameter.

of the 50 samples, \boxed{} reported an average time to get ready between 0 min and 10 min
(type a whole number )

Explanation:

Step1: Analyze the histogram

The histogram shows the frequency of sample means in different time intervals. For the interval 0 - 10 min, we look at the bar corresponding to 0 - 10. From the y - axis (number of samples), the height of this bar is 2 (since the y - axis has values like 2,4,6,... and the bar for 0 - 10 reaches up to 2).

Step2: Confirm the number of samples

Since the total number of samples is 50, and the bar for 0 - 10 min has a frequency of 2, the number of samples with average time between 0 and 10 min is 2.

Answer:

2