Assume a Poisson distribution. Find the following probabilities. a. Let lambdaequals7.0, find P(Upper X greater than or equals 2). b. Let lambdaequals0.4, find P(Upper X less than or equals 1). c. Let lambdaequals2.0, find P(Upper X less than or equals 3). d. Let lambdaequals3.8, find P(Upper X greater than or equals 2). e. Let lambdaequals5.1, find P(Upper X less than or equals 3). Question content area bottom Part 1 a. When lambdaequals7.0, P(Xgreater than or equals2)equals enter your response here (Round to three decimal places as needed.)