(a) According to the Ministry of Health, the height of Guinean travellers who were quarantined in Tamale for the novel coronavirus were normally distributed about a mean of 160cm and a standard deviation of 8cm. Find the probability that a traveller selected at random has (a) Height between 148cm and 175cm (b) Height above 164cm (c) Height below 179cm

a)

b)

c)

Step-by-step explanation:

Let X the random variable that represent the heights of Guinean travels , and for this case we know the distribution for X is given by:

Where and

Part a

We are interested on this probability

We can ue the z score formula given by:

Using this formula we got:

And we can find this probability with this difference using the normal standard distribution or excel:

Part b

And we can find this probability with this difference using the normal standard distribution or excel:

Part c

And we can find this probability with this difference using the normal standard distribution or excel:

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25