solve it using textbook formula

The average price of a 42-in. television on an electronics store's website is $770. Assume the price of these televisions follows the normal distribution with a standard deviation of $180. Complete parts a through e. b/fuu? The probability is 0.3467 . (Round to four decimal places as needed.) b. What is the probability that a randomly selected television from the site sells for between $400 and $500? The probability is 0.0469 . (Round to four decimal places as needed.) c. What is the probability that a randomly selected television from the site sells for between $900 and $1,0007 The probability is 0.1344 . (Round to four decimal places as needed.) d. The price intervals in parts b and c are equal ($100). Why are the probabilities so different? The interval ($900,31,000) is closer to the mean of the distribution than the interval ($400,$500). @, Suppose a couple is shopping on the electronics store's website for a new 42-in. television with a budget of $720. There are 16 42-inch televisions on the site. How many televisions are within their budget? [| television(s) (Round to the nearest whole number as needed.)