Internet providers: In a survey of 883 homeowners with high-speed Internet, the average monthly cost of a high-speed Internet plan was $59.76 with standard deviation $12.02. Assume the plan costs to be approximately bell-shaped. Estimate the
number of plans that cost between $47.74 and $71.78. Round to the nearest whole number.
The number of plans that cost between $47.74 and $71.78 is