Answer:
6.0520
Step-by-step explanation:
Given that:
Mean = 5.85
Standard deviation = 0.24
Let N denote the 80th percentile.
P(X < N) = 0.8

Using the Excel formula: = NORM.INV(0.8,5.85,0.24)
The 80th percentile for the diameters of mandarin oranges:
= 6.0520 (to 4 decimal place)
Answer:
334
Step-by-step explanation:
4 rock, 2 reggae, 2 country...total of 8
P(1st song is reggae) = 2/8 which reduces to 1/4
P(2nd song is reggae) = 1/7
P(both events happening) : 1/4 * 1/7 = 1/28