Determine the area under the standard normal curve that lies to the left of Z=−1.59, (b) Z=0.14, (c) Z=−0.26, and (d) Z=−1.03.

I just need help with solving this and a few more Statics Assignments. Please show each steps because I don’t know what steps I’m missing

1st Problem:
Determine the area under the standard normal curve that lies to the left of (a) Z=−1.59, (b) Z=0.14, (c) Z=−0.26, and (d) Z=−1.03.

(a) The area to the left of Z=−1.59 is?
(Round to four decimal places as needed.)

2nd Problem:
The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips.
(a) What is the probability that a randomly selected bag contains between 1100 and 1400 chocolate chips, inclusive?

(b) What is the probability that a randomly selected bag contains fewer than 1000 chocolate chips?
(c) What proportion of bags contains more than 1225 chocolate chips?

(d) What is the percentile rank of a bag that contains 1450 chocolate chips?

(a) The probability that a randomly selected bag contains between
1100 and 1400 chocolate chips, inclusive, is nothing.
(Round to four decimal places as needed.)

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