Please help! It is due very soon

The amounts of nicotine in a certain brand ofcigarette are normally distributed with a mean of 0.907 g and a standard deviation of 0.285 g. The company that produces these cigarettes claims that it has now reduced the amount of nicotine The supporting evidence consists of a sample of 43 cigarettes with a mean nicotine amount of 0.816 g. Assuming that the given mean and standard deviation have NOT changed. find the probability of randomly seleting 43 cigarettes with a mean of 0.816 g or less. P(M 1797cmie Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. Let X represent the full length of a certain species of newt. Assume that X has a normal probability distribution with mean 150.4 inches and standard deviation 6 inches. You intend to measure a random sample of n = 4'." newts. The bell curve below represents the distibution of these sample means. The scale on the horizontal axis is the standard error of the sampling distribution. Complete the indicated boxes, correct to two decimal places. Let X represent the full height ofa certain species of tree. Assume that X has a normal probability distribution with mean 139.8 ft and standard deviation 56.3 ft. You intend to measure a random sample of n = 103 trees. The bell curve below represents the distribution of these sample means. The scale on the horizontal axis is the standard error (standard deviation) of the sampling distribution. Complete the indicated boxes. correct to two decimal places