please answer these questions

Current Attempt in Progress The Bank of Connecticut issues Visa and MasterCard credit cards. It is estimated that the balances on all Visa credit cards issued by the Bank of Connecticut have a mean of 5845 and a standard deviation of $270. Assume that the balances on all these Visa cards follow a normal distribution a What is the probability that a randomly selected Visa card issued by this bank has a balance between $950 and $1480? Round your answer to three decimal places. P= 0342 b. What percentage of the Visa cards issued by this bank have a balance of 5735 or more? Round your answer to two decimal places. PE The average monthly mortgage payment for all homeowners in a city is $2850. Suppose that the distribution of monthly mortgages paid by homeowners in this city follow an approximate normal distribution with a mean of $2850 and a standard deviation of $440. Find to 4 decimal places the probability that the monthly mortgage paid by a randomly selected homeowner from this city is a less than $1200. Probability - b. more than $3500 Probability - c between $2100 and $3130 Probability - 1 d. between $3300 and $3800 Probability - X Your answer is incorrect. Let xbe a continuous random variable that follows a normal distribution with a mean of 460 and a standard deviation of 70. Find the value of x so that the area under the normal curve between and x is approximately 0.0120 and the value of x is greater than Round your answer to the nearest integer. 6152 The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. The expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $85 and a standard deviation of $18. If the management wants to give free gifts to at most 15.62% of the customers, what should the amount be above which a customer would receive a free gift? Round your answer to two decimal places. A customer should spend at least $ to receive a free gift