From past data, it is known that 70perent of brand A computer users plan to buy a newer model of brand A computer in the future. Suppose 25 brand A customer users are interviewed for their future preference. Use normal approximation to find
1) the chance that more than 10 of these users intend to switch brand in the next computer purchase
2) the chance that exactly 10 of these user intend to switc brand in their next purchase.
the answer is 0.1922 and 0.096 please show reasoning
Can binomial be used in this?
Isn't the p here 0.3 and n = 25