Suppose that the life expectancy of a certain brand of nondefective light bulbs is normally distributed, with a mean life of 1900 hr and a standard deviation of 100 hr. if 40 comma 000 of these bulbs are produced, how many can be expected to last at least 1900 hr?

The table shows the total distance that myra runs over different time periods. which describes myra’s distance as time increases? increasing decreasing zero constant

Is this a polynomial function? i need to know asap

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96